Siren's Call [Beta Edition] Kraken When Oathkeeper

When Oathkeeper

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {4} {2}

you may have target opponent discard a card

Set: Beta Edition Type: Land — Island Mountain Rarity: Rare ({T}: Add {U} or {R}

In ice there is perfect tranquility

Siren's Call [Beta Edition] Kraken When OathkeeperSet: Beta Edition Type: Instant Rarity: Uncommon Cost: {U} Cast this spell only during an opponent's turn, before attackers are declared. Creatures the active player controls attack this turn if able. At the beginning of the next end step, destroy all non Wall creatures that player controls that didn't attack this turn. Ignore this effect for each creature the player didn't control continuously since the beginning of the turn.