Magus of the Coffers

Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)

Whenever you tap a Swamp for mana, add an additional .

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

: Add . Target opponent gains control of this creature. (Activate only as an instant.)

Whenever you tap a Swamp for mana, add an additional .

: This creature gets +1/+1 until end of turn.

This creature gets +1/+1 for each artifact you control.

: Create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Target player discards a card for each Swamp you control.

Whenever you discard a creature card, create a 2/2 black Zombie creature token.

Whenever you discard a land card, add .

Whenever you discard a noncreature, nonland card, draw a card.