Tezzeret the Seeker (Japanese Borderless) [Secret Lair Drop Series] Stronghold {T}: Counter target activated ability

{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}

then another card is revealed for players to search

Master of Time on any player's turn any time you could cast an instant

according to their Grand Alliance

then shuffle

Tezzeret the Seeker (Japanese Borderless) [Secret Lair Drop Series] Stronghold {T}: Counter target activated abilitySet: Secret Lair Drop Series Type: Legendary Planeswalker Tezzeret Rarity: Mythic Cost: {3}{U}{U} +1: Untap up to two target artifacts. X: Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle. 5: Artifacts you control become artifact creatures with base power and toughness 5 5 until end of turn.