- Would I be able to discard cards from my hand for the effect of Guzma & Hala when my opponent has Shiftry's "Shifty Substitution" Ability in effect?
- No, all you can do is draw 3 cards.
Source:
TPCi Rules Team (2020-12-10)
Relevant cards
Note: All applicable cards may not be listed below.SWSH4_12
SM12_193