Fleshcage Walker

Psychic devices-Artifact.
If you successfully used a psychic device this turn,
Fleshcage Walker enters the battlefield with a
+1/+1 counter.
If it's a slime year, this costs {4} less to cast.
"Abominations... they are the enemy...but...to ally
with them... all for what? To end the Mantra energy
floods? What then of the slime years?" But the technology was already too much for them, and they would not survive against the tech. -The Slime Years, chalpter 6