Arid Mesa (Retro) [Modern Horizons 2] Elemental Bird If you control a commander

If you control a commander as you cast this spell

Set: The Lost Caverns of Ixalan Commander Type: Artifact Rarity: Mythic Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it

Set: Commander Legends Type: Land Rarity: Rare Undergrowth Stadium enters the battlefield tapped unless you have two or more opponents

Set: Mystery Booster 2 Type: Land Rarity: Rare {T}: Add {C}

Arid Mesa (Retro) [Modern Horizons 2] Elemental Bird If you control a commanderSet: 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.