As an additional cost to cast this spell, sacrifice a creature or pay {3}.

When Burning-Tree Emissary enters the battlefield, add {R}{G}.

When Nest Invader enters the battlefield, create a 0/1 colorless Eldrazi Spawn creature token. It has "Sacrifice this creature: Add {C}."

Nettle Sentinel doesn't untap during your untap step. Whenever you cast a green spell, you may untap Nettle Sentinel.

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) {G}: Regenerate River Boa.

Hexproof (This creature can't be the target of spells or abilities your opponents control.) Silhana Ledgewalker can't be blocked except by creatures with flying.

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.) Creatures with power less than Skarrgan Pit-Skulk's power can't block it.

Enchant creature Enchanted creature gets +3/+3. When enchanted creature dies, create a 3/3 green Elephant creature token.

Put a +1/+1 counter on target creature. Morbid — Put three +1/+1 counters on that creature instead if a creature died this turn.

Choose target artifact or enchantment. Its owner shuffles it into their library.

Destroy target artifact or enchantment. Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

({R/P} can be paid with either {R} or 2 life.) Gut Shot deals 1 damage to any target.

Equipped creature has "{T}: This creature deals 1 damage to any target." 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.)