While the card still struggles, it had major success for a while and gets played regularly thanks to it being able to Knock-Out any Pokemon in one hit with a bit of math
Furthermore, this is not a once-per-turn effect, so players can get multiple quick-play spells to set to disrupt their opponent's turn
Heroic Call X SPELL Special Summon 1 Warrior monster from your hand or GY, but if you Special Summoned a non-"Heroic" monster by this effect, negate its effects, also it cannot attack
It also does 80 DMG with Psychic Flash
I did have a Miirym, Sentinel Wyrm Commander deck briefly, but I didnt like how overpowered it was to have a card that powerful sitting in the command zone
Cards like Narset of the Ancient Way and Sorin, Grim Nemesis benefit from discarding a split card since it deals damage equal to the mana cost