Whir of Invention [Aether Revolt Prerelease Promos] Merfolk " —*The Theriad*

" —*The Theriad*

true to your own

Set: Zendikar Type: Enchantment Rarity: Uncommon Cost: {U} Whenever a card is put into your graveyard from anywhere

Each Draft Booster contains 15 cards and 1 token/ad card or Helper card

Wei Field Marshal's power is equal to the number of Swamps you control

Whir of Invention [Aether Revolt Prerelease Promos] Merfolk " —*The Theriad*Set: Aether Revolt Prerelease Promos Type: Instant Rarity: Rare Cost: {X}{U}{U}{U} Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.