Waller

Waller enters with five +1/+1 counters on it.
{1}, Remove a +1/+1 counter from Waller: Create
a 1/1 colourless Servo creature token.
If an artifact creature you control dies you may
pay {1}. If you do, put a +1/+1 counter on Waller.
The Unmovable guardian of Flior may be rude, but it
keeps the citizen's safe.