A damage increase/decrease wouldn't stop Tyrantrum-EX's damage regardless.
Despotic Fangs - Damage from this Pokémon's attacks isn't affected by any effects on your opponent's Active pokémon.
If I am not mistaken, wouldn't that mean that the damage done by Tyrantrum-EX would not be affected by an ability that blocks damage? Mr. Mime-GX's Magic Odds, for example reads like this:
Magic Odds - Prevent all damage done to this Pokémon by your opponent's attacks if that damage is exactly 10, 30, 50, 70, 90, 110, 130, 150, 170, 190, 210, 230, or 250.
In this scenario, let's say Tyrantrum-EX is swinging for 190, a number typically blocked, but then Despotic Fangs says Tyrantrum-EX's damage isn't affected so shouldn't it go through? Before it is mentioned, no, there were no pokémon in play that shut off abilities.
Edited by FossilJockeyMG, 15 February 2019 - 05:48 PM.