This effect is not once per turn, so players are incentivized to summon this card with a plethora of materials
Is Unwinding Clock legal to play
However, the data specifically points to issues in best-of-one matches, not best-of-three
Maintaining reputation shipping
The deck has a tribal way to do everything it needs: we play untapped dual lands by revealing changelings with Murmuring Bosk, turn our changelings into ramp with Harabaz Druid, draw cards and make opponents lose life with Yuriko, the Tiger's Shadow, tutor any changeling we need with Cateran Summons, exile creatures with Crib Swap, kill our opponents' non-army creatures with Widespread Brutality, play any changelings from our graveyard with Haakon, Stromgald Scourge, and we can win the game with Liliana's Contract or combos like Haakon, Stromgald Scourge + Morophon, the Boundless + Blades of Velis Vel
(2/2) Warriors Blade 3R Artifact : Equipment Choose A Job (When this equipment enters create a colorless 1/1 hero token and attach this to it)