When Thousand Tailed Watcher is pushed onto an opponent's battlefield using Accelerate, does its -3 debuff affect a Shen that is played afterwards?

Ruling: No, Shen comes in at full power. Thousand Tailed Watcher's effect resolves once when it enters play and does not create an ongoing aura effect.

Nuances:

• The effect is not "anchored" to the Watcher as a continuous effect
• The debuff only applies to units already in play when Watcher enters, not units played afterwards