Urza, Lord High Artificer [Modern Horizons] Ogre Rebel Primal Tide

Primal Tide

Whenever another Merfolk enters the battlefield under your control

pay {1}{W}{W}

Set: Magic 2013 Type: Creature — Hydra Rarity: Mythic Cost: {X}{G}{G} Primordial Hydra enters the battlefield with X +1/+1 counters on it

Set: Chronicles Type: Land — Urza's Power-Plant Rarity: Uncommon {T}: Add {C}

Urza, Lord High Artificer [Modern Horizons] Ogre Rebel Primal TideSet: Modern Horizons Type: Legendary Creature Human Artificer Rarity: Mythic Cost: {2}{U}{U} When Urza, Lord High Artificer enters the battlefield, create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control." Tap an untapped artifact you control: Add {U}. {5}: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.