Urza's Saga [Modern Horizons 2] Livre/book If X is greater than

If X is greater than or equal to the number of cards in your library

Threshold — Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard

Set: Portal Three Kingdoms Type: Sorcery Rarity: Uncommon Cost: {1}{R} Rockslide Ambush deals damage to target creature equal to the number of Mountains you control

Set: Planechase Anthology Planes Type: Plane — Serra's Realm Rarity: Common When you planeswalk away from Sanctum of Serra

Urza's Saga [Modern Horizons 2] Livre/book If X is greater thanSet: Modern Horizons 2 Type: Enchantment Land Urza's Saga Rarity: Rare (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I Urza's Saga gains "{T}: Add {C}." II Urza's Saga gains "{2}, {T}: Create a 0 0 colorless Construct artifact creature token with 'This creature gets +1 +1 for each artifact you control.'" III Search your library for an artifact card with mana cost {0} or {1}, put it onto the battlefield, then