The Ur-Dragon (Borderless) (CMM-689) - Commander Masters (Borderless)
NOT LEGAL
Standard
NOT LEGAL
Future
NOT LEGAL
Historic
NOT LEGAL
Timeless
NOT LEGAL
Gladiator
NOT LEGAL
Pioneer
NOT LEGAL
Modern
LEGAL
Legacy
NOT LEGAL
Pauper
LEGAL
Vintage
NOT LEGAL
Penny
LEGAL
Commander
LEGAL
Oathbreaker
NOT LEGAL
Standardbrawl
NOT LEGAL
Brawl
NOT LEGAL
Alchemy
NOT LEGAL
Pauper Commander
LEGAL
Duel
NOT LEGAL
Oldschool
NOT LEGAL
Premodern
NOT LEGAL
Predh
Eminence — As long as The Ur-Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost 
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.
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.
The Ur-Dragon (Borderless) (CMM-689) - Commander Masters (Borderless)
NOT LEGAL
Standard
NOT LEGAL
Future
NOT LEGAL
Historic
NOT LEGAL
Timeless
NOT LEGAL
Gladiator
NOT LEGAL
Pioneer
NOT LEGAL
Modern
LEGAL
Legacy
NOT LEGAL
Pauper
LEGAL
Vintage
NOT LEGAL
Penny
LEGAL
Commander
LEGAL
Oathbreaker
NOT LEGAL
Standardbrawl
NOT LEGAL
Brawl
NOT LEGAL
Alchemy
NOT LEGAL
Pauper Commander
LEGAL
Duel
NOT LEGAL
Oldschool
NOT LEGAL
Premodern
NOT LEGAL
Predh
Eminence — As long as The Ur-Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost 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.
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.
