Shambling Vent [Battle for Zendikar Prerelease Promos] SV5 where X is the number

where X is the number of instant and sorcery cards in your graveyard

If a Machine Xyz Monster(s) you control is destroyed by battle or an opponent's card effect while this card is in your GY: You can banish this card and 1 Machine Xyz Monster from your GY

Otarian Juggernaut gets +3/+0 and attacks each combat if able

Set: Saviors of Kamigawa Type: Instant Rarity: Uncommon Cost: {3}{W} Choose one —

Set: XY: Ancient Origins Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Shambling Vent [Battle for Zendikar Prerelease Promos] SV5 where X is the numberSet: Battle for Zendikar Prerelease Promos Type: Land Rarity: Rare Shambling Vent enters the battlefield tapped. {T}: Add {W} or {B}. {1}{W}{B}: Shambling Vent becomes a 2 3 white and black Elemental creature with lifelink until end of turn. It's still a land.