Josephine, Keen Antiquarian

Haste
Whenever Josephine, Keen Antiquarian attacks, create a Treasure token (It's an artifact with "{t}, Sacrifice this artifact: Add one mana of any color.")
Whenever you sacrifice a Treasure, Josephine, Keen Antiquarian gets +1/+0 until end of turn.

"Roll up your sleeves! Profit requires toil!"
- Josephine, Keen Antiquarian