mtg monument cards to Perfection (Extended Art) [Phyrexia: All Will Be One] List.remove(d Temur Monument (TDM-248) - Tarkir:

A little less general-centric are the artifact mana sources: Grim Monolith, Mana Crypt, Mana Reflection, Mana Vault, Mox Diamond and Sol Ring

If you want your Forests to do real work, this is the short list

Lightning, Army of One Rarity: Mythic Rare TYPE: Legendary Creature SUBTYPE: Human Soldier CMC: 3 Mana cost: USD: $9.81 EUR: 7.81 TIX: 0.03 EDHREC RANK: 2663 (3/2) First strike, trample, lifelink Stagger Whenever Lightning deals combat damage to a player, until your next turn, if a source would deal damage to that player or a permanent that player controls, it deals double that damage instead

I had a large comic collection that I had been hanging on to since the mid-90s, and I finally decided to sell it

Black doesnt care, though

You can exile cards from the top of your library instead of paying life, and thats huge with cards like Bolas's Citadel or K'rrik, Son of Yawgmoth