Birchlore Rangers [Onslaught] Thopter Sacrifice another creature: Put a

Sacrifice another creature: Put a +1/+1 counter on Gobbling Ooze

but it's better than being dropped

one on top of your library

Set: From the Vault: Relics Type: Artifact Rarity: Mythic Cost: {0} Sacrifice a land: You gain 2 life

This spell costs {7} less to cast if it targets a spell or ability that targets a creature you control with power 7 or greater

Birchlore Rangers [Onslaught] Thopter Sacrifice another creature: Put aSet: Onslaught Type: Creature Elf Druid Ranger Rarity: Common Cost: {G} Tap two untapped Elves you control: Add one mana of any color. Morph {G} (You may cast this card face down as a 2 2 creature for {3}. Turn it face up any time for its morph cost.)