When First-Sphere Gargantua enters, you draw a card and you lose 1 life.Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)
Exploit (When this creature enters, you may sacrifice a creature.)When Silumgar Butcher exploits a creature, target creature gets -3/-3 until end of turn.
Kicker (You may pay an additional as you cast this spell.)Create two 1/1 green Saproling creature tokens. If this spell was kicked, create four of those tokens instead.
Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)This creature assigns combat damage equal to its toughness rather than its power.
FlyingWhenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Creatures you control have vigilance.+1: You gain 3 life.−2: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)Vigilance
Regenerate target creature. Draw a card. (The next time the creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, also regenerate each other creature you control.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)Stoke the Flames deals 4 damage to any target.