Bone Courtier

When Bone Courtier enters the battlefield, put a stress counter on target creature. (If a creature has 3 or more stress counters, sacrifice it.)
Position 4 — Whenever bone courtier deals combat damage to a creature, put a stress counter on it. (Gain this ability if in position on upkeep. Change position during attack step, and only if you do not attack.)
"The human mind - fragile like a robin's egg, "
— the Ancestor