Austere Command (Invocation) [Amonkhet Invocations] Merfolk Wizard Ally if a source would deal

if a source would deal damage

then you may put any number of land cards that player owns from exile onto the battlefield under your control

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {1}{U}{U}{U} Choose two —

Set: Commander 2013 Type: Instant Rarity: Uncommon Cost: {U}{B} Look at the top five cards of your library

I gird them in armor and let them loose

Austere Command (Invocation) [Amonkhet Invocations] Merfolk Wizard Ally if a source would dealSet: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {4}{W}{W} Choose two Destroy all artifacts. Destroy all enchantments. Destroy all creatures with mana value 3 or less. Destroy all creatures with mana value 4 or greater.