Petrifying Meddler

The design decision worth studying is that the tempo rides the cast trigger, not an enters-the-battlefield clause. Because the ability fires as a separate trigger the moment you cast the spell, the stun counter lands regardless of whether the body ever hits the battlefield: counter this and you have still tapped down a blocker or a would-be attacker on the way out. That decoupling stitches a soft lockdown effect onto a defensive back without demanding the whole card survive to pay off. The stun counter is the sharper cousin of a plain tap: it consumes the target's next untap step rather than just costing one turn of attacking, so a single trigger idles a creature across two of its turns. Fold in reach and a five-toughness frame that walks off most incidental burn, and it becomes a wall that also sidelines the exact attacker you most need slowed. Devoid keeps it colorless to sit inside the Eldrazi identity, but beneath the type line this reads as a blue tempo creature: cast it when a stun counter is worth two of the opponent's turns, then let it hold the ground behind that opening.