the Sky Ruin enters the battlefield tapped
and Y is half the number of Forests you control
search your library for a colorless creature card
Set: Mercadian Masques Type: Enchantment Rarity: Rare Cost: {2}{G} Exile a creature you control: Add X mana of any one color
Set: Rivals of Ixalan Promos Type: Legendary Creature — Elder Dinosaur Rarity: Rare Cost: {10}{G}{G} This spell costs {X} less to cast
Odric, Lunarch Marshal [Shadows over Innistrad Prerelease Promos] Elf Druid the Sky Ruin enters theSet: Shadows over Innistrad Prerelease Promos Type: Legendary Creature Human Soldier Rarity: Rare Cost: {3}{W} At the beginning of each combat, creatures you control gain first strike until end of turn if a creature you control has first strike. The same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, skulk, trample, and vigilance.