Legendary creatures don't untap during their controllers' untap steps. When Arena of the Ancients enters the battlefield, tap all legendary creatures.

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +4/+4 and has vigilance and lifelink. {3}: Return Batterskull to its owner's hand. Equip {5}

Whenever a nonartifact permanent enters the battlefield under your control, you may return another permanent you control that shares a permanent type with it to its owner's hand.

{3}: Ensouled Scimitar becomes a 1/5 Spirit artifact creature with flying until end of turn. (Equipment that's a creature can't equip a creature.) Equipped creature gets +1/+5. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

{1}, {T}: Return target creature to its owner's hand unless its controller pays {1}.

{T}: Add one mana of any color that a land an opponent controls could produce.

Equipped creature gets +3/+2. Whenever a legendary creature enters the battlefield under your control, you may attach Hero's Blade to it. Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

{2}: Mirage Mirror becomes a copy of target artifact, creature, enchantment, or land until end of turn.

{1}, {T}: Add {B}{R}.

You may have Sculpting Steel enter the battlefield as a copy of any artifact on the battlefield.

Equipped creature gets +4/+2. Whenever equipped creature dies, if it was a Human, create a 1/1 white Spirit creature token with flying. Equip {3}

{T}: Add {C}{C}.

{1}: Untap Staff of Domination. {2}, {T}: You gain 1 life. {3}, {T}: Untap target creature. {4}, {T}: Tap target creature. {5}, {T}: Draw a card.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.) Equip {1}

Equipped creature gets +4/+2 and doesn't untap during its controller's untap step. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

Landfall — Whenever a land enters the battlefield under your control, you may pay {2}{R}. If you do, create a 3/1 red Elemental creature token with trample and haste. Exile that token at the beginning of the next end step.

When Ancestral Statue enters the battlefield, return a nonland permanent you control to its owner's hand.

Megamorph {2}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When Atarka Efreet is turned face up, it deals 1 damage to any target.

{T}: Target player loses 1 life. {4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

{1}{B}: Regenerate target Zombie. Morph {2}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Level up {3}{R} ({3}{R}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-2 2/3 {T}: Brimstone Mage deals 1 damage to any target. LEVEL 3+ 2/4 {T}: Brimstone Mage deals 3 damage to any target.

Emerge {5}{B}{B} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.) When you cast this spell, target opponent reveals their hand. You choose from it a nonland card with mana value 3 or less and a card with mana value 4 or greater. That player discards those cards.

Bestow {5}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Discard a creature card: Erebos's Emissary gets +2/+2 until end of turn. If Erebos's Emissary is an Aura, enchanted creature gets +2/+2 until end of turn instead. Enchanted creature gets +3/+3.

{2}{R}, {T}: Ghost-Lit Raider deals 2 damage to target creature. Channel — {3}{R}, Discard Ghost-Lit Raider: It deals 4 damage to target creature.

Bestow {3}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Gnarled Scarhide can't block. Enchanted creature gets +2/+1 and can't block.

{1}{R}: Target Goblin creature gets +1/+0 until end of turn. Morph {R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Level up {1}{B} ({1}{B}: Put a level counter on this. Level up only as a sorcery.) LEVEL 2-3 2/2 {B}, {T}: Target creature gets -2/-2 until end of turn. LEVEL 4+ 4/4 {B}, {T}: Target creature gets -4/-4 until end of turn.

Menace (This creature can't be blocked except by two or more creatures.) Megamorph {R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When Ire Shaman is turned face up, exile the top card of your library. Until end of turn, you may play that card.

{R}, {T}, Discard a card: Destroy target blue permanent. {1}{R}, {T}, Discard a card: Jaya Ballard, Task Mage deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn. {5}{R}{R}, {T}, Discard a card: Jaya Ballard deals 6 damage to each creature and each player.

Level up {R} ({R}: Put a level counter on this. Level up only as a sorcery.) LEVEL 4-7 4/4 Flying LEVEL 8+ 8/8 Flying, trample {R}: Kargan Dragonlord gets +1/+0 until end of turn.

Haste Megamorph {R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When Kolaghan Stormsinger is turned face up, target creature gains haste until end of turn.

Flying Whenever a Dragon you control attacks, creatures you control get +1/+0 until end of turn. Dash {3}{B}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

When Lava Zombie enters the battlefield, return a black or red creature you control to its owner's hand. {2}: Lava Zombie gets +1/+0 until end of turn.

Level up {1}{R} ({1}{R}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-5 6/6 LEVEL 6+ 6/6 Whenever Lord of Shatterskull Pass attacks, it deals 6 damage to each creature defending player controls.

{B}: Regenerate Marang River Skeleton. Megamorph {3}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Whenever Mardu Strike Leader attacks, create a 2/1 black Warrior creature token. Dash {3}{B} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Level up {2}{B} ({2}{B}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-2 4/3 Deathtouch LEVEL 3+ 5/4 First strike, deathtouch

Level up {3} ({3}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-3 4/2 LEVEL 4+ 7/3 {B}: Regenerate Null Champion.

Whenever an artifact enters the battlefield under your control, you may return Ovalchase Daredevil from your graveyard to your hand.

At the beginning of your upkeep, you lose 2 life. Dash {2}{B}{B} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

({B/R} can be paid with either {B} or {R}.) {3}{B}, Discard a card: Target creature gets -2/-2 until end of turn. {3}{R}: Create a 2/1 red Goblin creature token with haste. Exile it at the beginning of the next end step.

Dash {1}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Creatures with power greater than Silumgar Assassin's power can't block it. Megamorph {2}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When Silumgar Assassin is turned face up, destroy target creature with power 3 or less an opponent controls.

Bestow {3}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Whenever Spiteful Returned or enchanted creature attacks, defending player loses 2 life. Enchanted creature gets +1/+1.

Trample Megamorph {4}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

{2}: Roll a six-sided die. Urza's Science Fair Project gets the indicated result. 1 — It gets -2/-2 until end of turn. 2 — Prevent all combat damage it would deal this turn. 3 — It gains vigilance until end of turn. 4 — It gains first strike until end of turn. 5 — It gains flying until end of turn. 6 — It gets +2/+2 until end of turn.

Whenever Vaultbreaker attacks, you may discard a card. If you do, draw a card. Dash {2}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Morph {X}{X}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Warbreak Trumpeter is turned face up, create X 1/1 red Goblin creature tokens.

Morph—Pay 5 life. (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Madness {R}, cycling {1}{R}, kicker {2}{R}, flashback {3}{R}, buyback {4}{R} Blast from the Past deals 2 damage to any target. If this spell was kicked, create a 1/1 red Goblin creature token.

({T}: Add {B} or {R}.) As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile target player's graveyard. {T}: Add {B}.

{T}: Add one mana of any color in your commander's color identity.

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

{T}: Add one mana of any color that a land an opponent controls could produce.

{T}: Add {C}. {B/R}, {T}: Add {B}{B}, {B}{R}, or {R}{R}.

{T}: Add {C}. {T}: Each player gains control of all creatures they own.

({T}: Add {R}.)

{T}: Add one mana of any type that a land you control could produce.

({T}: Add {B}.)

+1: Exile the top card of your library. You may cast that card. If you don't, Chandra, Torch of Defiance deals 2 damage to each opponent. +1: Add {R}{R}. −3: Chandra, Torch of Defiance deals 4 damage to target creature. −7: You get an emblem with "Whenever you cast a spell, this emblem deals 5 damage to any target."

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

Escalate {1} (Pay this cost for each mode chosen beyond the first.) Choose one or more — • Target player discards all the cards in their hand, then draws that many cards. • Collective Defiance deals 4 damage to target creature. • Collective Defiance deals 3 damage to target opponent or planeswalker.

All creatures get -2/-2 until end of turn. Awaken 3—{5}{B}{B} (If you cast this spell for {5}{B}{B}, also put three +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Destroy target creature or planeswalker. Awaken 4—{5}{B}{B} (If you cast this spell for {5}{B}{B}, also put four +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Roll a six-sided die. Strategy, Schmategy has the indicated effect. 1 — Do nothing. 2 — Destroy all artifacts. 3 — Destroy all lands. 4 — Strategy, Schmategy deals 3 damage to each creature and each player. 5 — Each player discards their hand and draws seven cards. 6 — Repeat this process two more times.

Destroy target artifact you don't control. Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")