Mega Heracross even maintains a similar pose to the one depicted in the Heracross full-art, showing that this Pokemon remains ready with its arms in the air
Attack with Ukkima, get its leave the battlefield ability when you ninjutsu in your real attacker, buff the Ninja with Cazur, rinse, and repeat
Snapcaster Mage gives an instant or sorcery card in your graveyard flashback until end of turn
Now, Mega Blaziken EX also discards one Energy on using the move, but thats no problem, as you can just give it the next turns Energy or use the new Flame Patch Item card to give it back that Fire Energy from the discard pile
But due to the fun-first culture of the format, shutting down someones ability to play their cards even if its partly a consequence of that opponents deck building choices is heavily stigmatized