Ruination

Doc Aurlock, Grizzled Genius

Spells you cast from your graveyard or from exile cost {2} less to cast.
Plotting cards from your hand costs {2} less.

Loot, the Key to Everything

Ward {1}
At the beginning of your upkeep, exile the top X cards of your library, where X is the number of card types among other nonland permanents you control. You may play those cards this turn.

Arcane Signet

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

Sol Ring

Azusa, Lost but Seeking

You may play two additional lands on each of your turns.