Leyline Tyrant [Zendikar Rising Prerelease Promos]Set: Zendikar Rising Prerelease Promos Type: Creature Dragon Rarity: Mythic Cost: {2}{R}{R} Flying You don't lose unspent red mana as steps and phases end. When Leyline Tyrant dies, you may pay any amount of {R}. When you do, it deals that much damage to any target.

Whenever Yidris

add mana equal to enchanted permanent's mana cost

Inventors Type: Artifact Rarity: Common Cost: {2} When Ichor Wellspring enters the battlefield or is put into a graveyard from the battlefield

Sacrifice that creature at the beginning of the next end step

Sometimes it's best to let sleeping dragons lie

" and it loses all other abilities

Drink deep

Set: Invasion Type: Enchantment Rarity: Rare Cost: {2}{R} Whenever a land enters the battlefield

reveal cards from the top of your library until you reveal a nonland card

Stormscale Anarch deals 4 damage instead

Set: Mystery Booster Type: Sorcery Rarity: Rare Cost: {1}{G}{G} As an additional cost to cast this spell

that player exiles it