Card

The Ur-Dragon

Mana cost {4}{W}{U}{B}{R}{G}

Legendary Creature — Dragon Avatar 10/10

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.

Part of 2 known combos, one of them two-card. 4 official rulings.

Commander
Legal
Printing
Mythic · C17 · #48
Cheapest printing
€31.02
EDHREC salt
1.97
Color identity
Black, Green, Red, Blue, White
Keywords
Flying, Eminence

Scryfall · EDHREC

Bracket

  • B1 Exhibition — Not in the same deck as its two-card combo partner: Rafiq of the Many
  • B2 Core — Not in the same deck as its two-card combo partner: Rafiq of the Many
  • B3 Upgraded — Not in the same deck as its early two-card combo partner: Rafiq of the Many
  • B4 Optimized — allowed: No restriction beyond the banned list
  • B5 cEDH — allowed: No restriction beyond the banned list

Why

  • Two-card combo with Rafiq of the Many (early with Rafiq of the Many)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

2 known combos, one of them two-card.

Combos: Commander Spellbook

Rulings

  • 2017-08-25 · Wizards of the Coast
    You may only put one permanent card from your hand onto the battlefield, no matter how many Dragons you attacked with or how many players they attacked.
  • 2017-08-25 · Wizards of the Coast
    You draw one card for each Dragon you controlled that attacked, even if some of them left the battlefield before The Ur-Dragon’s triggered ability resolves.
  • 2017-08-25 · Wizards of the Coast
    The Ur-Dragon’s triggered ability resolves after all attackers have been chosen. You can’t attack with some Dragons, put a creature card with haste onto the battlefield, and then attack with that creature. Similarly, any “whenever a creature attacks” abilities of the permanent card you put onto the battlefield won’t trigger.
  • 2017-08-25 · Wizards of the Coast
    If a Dragon you control enters the battlefield attacking, it won’t cause The Ur-Dragon’s last ability to trigger.

Rulings: Scryfall · Wizards of the Coast