Avian Changeling

B, Sacrifice a Goblin: This creature gets +2/+2 until end of turn.

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

Flash Flying Other Faerie creatures you control get +1/+1. Other Faeries you control have shroud. (They can't be the targets of spells or abilities.)

R, Sacrifice this artifact: It deals 2 damage to any target. 1, Sacrifice this artifact: Draw a card.

Equipped creature gets +1/+1 and is every creature type. Equip 2

At the beginning of your upkeep, put a spore counter on this creature. Creatures you control have "Remove two spore counters from this creature: Create a 1/1 green Saproling creature token."

B, T: Tap target creature.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Enchant permanent You control enchanted permanent.