Arid Mesa [Modern Horizons 2] Swamp Mountain repeat this process

repeat this process

Set: March of the Machine: The Aftermath Type: Legendary Creature — Elf Scout Rarity: Mythic Cost: {2}{G} Landfall—Whenever a land enters the battlefield under your control

and has "Whenever a player casts a spell or a creature attacks

Set: Commander Legends: Battle for Baldur's Gate Type: Creature — Cat Beast Rarity: Rare Cost: {3}{U} Avoidance — Whenever you cast a noncreature spell

Pay 3 life: Proliferate

Arid Mesa [Modern Horizons 2] Swamp Mountain repeat this processSet: Modern Horizons 2 Type: Land Rarity: Rare {T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.