Discontinuity [Core Set 2021 Prerelease Promos] Urza’s Whenever you tap a Swamp

Whenever you tap a Swamp for mana

and Dominaria itself to the point of annihilation

Here will we sacrifice her to bring the Great Rekindling to our people

mainly because they don't live long

Enchanted player can't activate abilities that aren't mana abilities or loyalty abilities

Discontinuity [Core Set 2021 Prerelease Promos] Urza’s Whenever you tap a SwampSet: Core Set 2021 Prerelease Promos Type: Instant Rarity: Mythic Cost: {3}{U}{U}{U} As long as it's your turn, this spell costs {2}{U}{U} less to cast. End the turn. (Exile all spells and abilities from the stack, including this card. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)