The Ur-Dragon [Commander 2017] Giant (Additional mana in the cost

(Additional mana in the cost may be paid with any color of mana or colorless mana

The altar takes what it will

Reverse Type: Legendary Planeswalker — Nissa +1: Reveal the top card of your library

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} Mana Vault doesn't untap during your untap step

Set: Legends Type: Instant Rarity: Common Cost: {B} Prevent all combat damage that would be dealt this turn

The Ur-Dragon [Commander 2017] Giant (Additional mana in the costSet: Commander 2017 Type: Legendary Creature Dragon Avatar Rarity: Mythic Cost: {4}{W}{U}{B}{R}{G} Eminence As long as The Ur Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost {1} less to cast. Flying Whenever one or more Dragons you control attack, draw that many cards, then you may put a permanent card from your hand onto the battlefield.