Command Tower

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

Forest

Swamp

Indomitable Ancients

Generous Ent

Reach
When this creature enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")
Forestcycling {1} ({1}, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle.)

Plains

Doran, the Siege Tower

Each creature assigns combat damage equal to its toughness rather than its power.