Siren's Call [Limited Edition Beta] Duel {T}: Tap target artifact

{T}: Tap target artifact

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

using their libraries as their decks

(Then put Timetwister into its owner's graveyard

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

Siren's Call [Limited Edition Beta] Duel {T}: Tap target artifactSet: 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.