Siren's Call [Limited Edition Beta] Duel {T}: Put a mire counter

{T}: Put a mire counter on target non-Swamp land

where X is that spell's converted mana cost

(Then put Timetwister into its owner's graveyard

Set: Portal Three Kingdoms Type: Basic Land — Mountain Common Cost: ({T}: Add {R}

Set: Kaladesh Inventions Type: Artifact Creature — Thopter Rarity: Mythic Cost: {0} Flying

Siren's Call [Limited Edition Beta] Duel {T}: Put a mire counterSet: Limited Edition Beta Type: Instant 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.