If a noncreature permanent under your control was destroyed this turn by a spell or ability an opponent controlled, you may pay {G} rather than pay this spell's mana cost. Create four 1/1 green Snake creature tokens.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Destroy target nongreen creature. It can't be regenerated.

Counter target spell with mana value 4 or greater.

Exile target artifact or enchantment.

Exile target creature or planeswalker.

Target creature gets +3/+3 until end of turn. It gets an additional +2/+2 until end of turn for each card named Growth Cycle in your graveyard.

Target creature gains deathtouch until end of turn. Regenerate it. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Target creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

If a creature spell you cast this turn was countered by a spell or ability an opponent controlled, you may pay {0} rather than pay this spell's mana cost. Look at the top seven cards of your library. You may put a creature card from among them onto the battlefield. Put the rest on the bottom of your library in any order.

{X}: This artifact becomes an X/X Construct artifact creature until end of turn.

{2}, {T}, Sacrifice this artifact: Add {U}{B}. Draw a card.

When this artifact enters, you draw a card and you lose 1 life. {2}{B}, Sacrifice this artifact: You draw a card and you lose 1 life.

{2}, {T}, Sacrifice this artifact: Add {R}{G}. Draw a card.

{4}, {T}: Create a 1/1 colorless Snake artifact creature token. It has "Whenever this creature deals damage to a player, that player gets a poison counter." (A player with ten or more poison counters loses the game.)

Whenever an Elf you control dies, exile it. {T}, Pay 2 life: Until end of turn, you may cast a creature spell from among cards exiled with this artifact.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Haste {T}: Add one mana of any color. Spend this mana only to cast a creature spell.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.

When this creature dies, return another target creature card from your graveyard to your hand.

Deathtouch When this creature dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Heroic — Whenever you cast a spell that targets this creature, this creature deals 2 damage to any target.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Reach (This creature can block creatures with flying.) Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Whenever another creature dies, each opponent loses 1 life.

{3}{W}, Sacrifice this creature: Destroy target enchantment.

When this creature enters, you may destroy target nonblack creature.

Reveal the top five cards of your library. You may put a creature card and/or an enchantment card from among them into your hand. Put the rest into your graveyard.

Search your library for a card, put that card into your hand, then shuffle.

Converge — Kaleidoscorch deals X damage to any target, where X is the number of colors of mana spent to cast this spell. Flashback {4}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target creature. Add {B}{B}{B}.

Destroy target creature. If that creature had a +1/+1 counter on it, create a 1/1 green Snake creature token.

Search your library for a snow permanent card, a legendary card, or a Saga card, reveal it, put it into your hand, then shuffle. You gain 1 life for each {S} spent to cast this spell. ({S} is mana from a snow source.)