During your turn, each non-Equipment artifact and non-Aura enchantment you control with mana value 4 or greater is a 4/4 Elemental creature in addition to its other types and has indestructible, haste, and "Whenever this creature deals combat damage to a player, draw a card."

When this artifact enters, exile all creatures with power 5 or greater until this artifact leaves the battlefield. (Those creatures return under their owners' control.)

Constellation — Whenever this creature or another enchantment you control enters, draw a card.

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

If this card is in your opening hand, you may begin the game with it on the battlefield. Whenever you cast a spell, you may pay {1}. If you do, this enchantment deals 1 damage to target player or planeswalker.

Indestructible As long as your devotion to red and green is less than seven, Xenagos isn't a creature. At the beginning of combat on your turn, another target creature you control gains haste and gets +X/+X until end of turn, where X is that creature's power.

If this card is in your opening hand, you may begin the game with it on the battlefield. Whenever you and/or at least one permanent you control becomes the target of a spell or ability an opponent controls, this enchantment deals 2 damage to that player.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) If a source you control would deal damage to a permanent or player, it deals triple that damage instead.

Whenever a nontoken creature you control enters, if it doesn't have the same name as another creature you control or a creature card in your graveyard, draw a card.

This land enters tapped unless you control two or fewer other lands. {T}: Add {R} or {G}.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Whenever you expend 4, put a +1/+1 counter on this creature. (You expend 4 as you spend your fourth total mana to cast spells during a turn.) {T}: Add {R} or {G}.

Whenever you attack, if it's the first combat phase of the turn, untap all attacking creatures. They gain first strike until end of turn. After this phase, there is an additional combat phase. Choose a Background (You can have a Background as a second commander.)

During your turn, creatures you control get +1/+0 and have trample.

This land enters tapped. {T}: Add {R} or {G}. {2}{R}{G}: This land becomes a 3/4 red and green Dinosaur creature until end of turn. It's still a land. Whenever this land attacks, another target attacking creature gets +2/+0 until end of turn. Untap that creature.

({T}: Add {R} or {G}.) This land enters tapped unless you control two or more basic lands.

Creatures named Lightning Rager can't attack you or planeswalkers you control. At the beginning of each player's upkeep, that player creates a 5/1 red Elemental creature token named Lightning Rager. It has trample, haste, and "At the beginning of the end step, sacrifice this token."

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.")

Trample Other creatures you control have trample.

If a source you control would deal damage to a permanent or player, it deals triple that damage to that permanent or player instead.

Creatures you control have double strike.

{T}: Add one mana of any color. Whenever you expend 8, return up to one target permanent card from your graveyard to your hand. (You expend 8 as you spend your eighth total mana to cast spells during a turn.)

Whenever you cast an enchantment spell, draw a card.

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

({T}: Add {R} or {G}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

This artifact enters tapped. {1}, {T}: Destroy all artifacts, creatures, and enchantments.

Whenever you cast a spell from your hand, reveal the top X cards of your library, where X is that spell's mana value. You may cast a spell with mana value X or less from among cards revealed this way without paying its mana cost. Put the rest on the bottom of your library in a random order.

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

Indestructible As long as your devotion to green is less than five, Nylea isn't a creature. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.) Other creatures you control have trample. {3}{G}: Target creature gets +2/+2 until end of turn.

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

Put a +1/+1 counter on target creature you control. It gains reach, trample, hexproof, and indestructible until end of turn. (It can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

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

Trample Enchantment spells you cast from your hand have cascade. (Whenever you cast an enchantment spell from your hand, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

{T}: Add {C}. {X}{R}{G}, {T}: Target creature gets +X/+0 and gains trample until end of turn.

If this card is in your opening hand, you may begin the game with it on the battlefield. Creatures you control get +0/+1. Whenever a creature you control enters, you may gain 1 life.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.) Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, when it enters, they draw a card.) Reach When this creature enters, if the gift was promised, destroy target artifact or enchantment an opponent controls.

At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice this enchantment, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle.

If you control two or more other lands, this land enters tapped. {T}: Add {G}. {X}{G}: Until end of turn, this land becomes an X/X green Hydra creature. It's still a land. X can't be 0.