Minamo, School at Water's Edge [Mystery Booster] Skeleton Whenever you cast a green

Whenever you cast a green spell

{T}: Create a 1/1 green Elf Warrior creature token

Set: Unknown Event Type: Sorcery Rarity: Common Cost: {X}{4}{G}{G} Create X 6/6 green Dinosaur creature tokens with trample named Colossal Dreadmaw

You may cast any number of spells from among the nonland cards exiled this way without paying their mana costs

Set: Double Masters Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

Minamo, School at Water's Edge [Mystery Booster] Skeleton Whenever you cast a greenSet: Mystery Booster Type: Legendary Land Rarity: Rare {T}: Add {U}. {U}, {T}: Untap target legendary permanent. Its students graduate the school and enter history.