Suyin Beifong

Suyin is also a Metalbender and Artificer.

Metalcraft — Suyin gets Ward X where X is
the number of counters and artifacts you control.

Suyin enters with 3 +1/+1 counters.

Remove a +1/+1 counter from a creature you control, {1}: Create a treasure.
Sacrifice an artifact, {1}: Put a +1/+1 counter on a creature you control.