Zapdo ex legendary ascent vs muk ex

[psycodad]

Does muk ex stop zapdos ex legendary ascent pokemon power or is the legendary ascent power considered a coming into play power like the old entei?

 

[Chrisbo]

Most recent ruling about this from the Compendium-EX:

== LEGENDARY ASCENT (Articuno EX - EX:Fire Red / Leaf Green; Moltres EX - EX:Fire Red / Leaf Green; Zapdos EX - EX:Fire Red / Leaf Green)

Q. Does Muk's "Toxic Gas" prevent the "Legendary Ascent" Poke-POWER found on the legendary birds of FireRed/LeafGreen from happening?
A. No, "coming into play" powers like "Legendary Ascent" are not prevented by "Toxic Gas". (Sep 9, 2004 PUI Rules Team)
​

Hope this helps,
- CHRISBO