Leviathan [The Dark] Theros If Gemstone Caverns has a

If Gemstone Caverns has a luck counter on it

Set: Commander's Arsenal Type: Enchantment Rare Cost: {3}{G}{W} Creatures you control get +1/+1

Set: Shadows over Innistrad Promos Type: Legendary Planeswalker — Jace Mythic Cost: {3}{U}{U} +1: Scry 1

Remove a divinity counter from Myojin of Night's Reach: Each opponent discards their hand

then discard three cards at random

Leviathan [The Dark] Theros If Gemstone Caverns has aSet: The Dark Type: Creature Leviathan Rare Cost: {5}{U}{U}{U}{U} Trample Leviathan enters the battlefield tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap Leviathan. Leviathan can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)