Rhystic Study [Judge Gift Cards 2018] Root RPG You may put a green

You may put a green permanent card with converted mana cost X or less from among them onto the battlefield

with the Aces

but vague enough

Set: Betrayers of Kamigawa Type: Instant — Arcane Rare Cost: {X}{B}{B} You may exile a black card with converted mana cost X from your hand rather than pay this spell's mana cost

would settle for a feather

Rhystic Study [Judge Gift Cards 2018] Root RPG You may put a greenSet: Judge Gift Cards 2018 Type: Enchantment Rare Cost: {2}{U} Whenever an opponent casts a spell, you may draw a card unless that player pays {1}. Friends teach what you want to know. Enemies teach what you need to know.