Ashnod's Altar

Lotus Petal

{T}, Sacrifice Lotus Petal: Add one mana of any color.

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

Artifact spells you cast cost {1} less to cast.

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

Sacrifice Welding Jar: Regenerate target artifact.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Draw two cards.

Flying
When Mulldrifter enters, draw two cards.
Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)