Thundermare [Portal] Urza's Legacy Promos then sacrifice it unless you

then sacrifice it unless you pay its upkeep cost for each age counter on it

Take an extra turn after this one if an opponent cast a blue spell this turn

{T}: Untap target creature

Set: Ixalan Treasure Chest Type: Legendary Enchantment // Legendary Land Rarity: Rare Cost: {2}{G} When Growing Rites of Itlimoc enters the battlefield

Set: Revised Edition Type: Land — Swamp Mountain Rarity: Rare ({T}: Add {B} or {R}

Thundermare [Portal] Urza's Legacy Promos then sacrifice it unless youSet: Portal Type: Creature Elemental Horse Rarity: Rare Cost: {5}{R} Haste (This creature can attack and {T} as soon as it comes under your control.) When Thundermare enters the battlefield, tap all other creatures.