Command Tower

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

Arcane Signet

Exile target creature. Its controller gains life equal to its power.

Search your library for a Forest card, put it onto the battlefield, then shuffle.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip {0}

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.
{T}: Add {C}{C}.