Liberty, Machine's Faithful

Liberty is also a Cleric and an Artificer.

At the beginning of each upkeep, but a sentience counter on target noncreature artifact and gain control of that artifact for as long as it has a sentience counter on it.

Artifacts you control with sentience counters
on them are 0/0 golems in addition to their other types and have "This creature gets
+1/+1 for each other golem on the battlefield."