Command Tower

{T}: Add one mana of any color in your commander's color identity.

Swamp

Forest

Island

Mountain

The Ur-Dragon

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.

Plains

Exotic Orchard

{T}: Add one mana of any color that a land an opponent controls could produce.

Have

Getting

Don't Have

UR dead bro