all first edition yugioh cards Vol.1 | Yu-Gi-Oh! Wiki how to tell first edition

In other news, "Pokmon TCG" Expanded Format banned the Medicham V card for an unknown reason.

Triggered abilities use the words "when," "whenever," or "at." They're often written as "[Trigger condition], [effect]." Some keyword abilities (such as prowess) are triggered abilities and will have "when," "whenever," or "at the beginning of" in their reminder text

C Common Reflect Bounder X LIGHT Level 4 [ MachineEffect ] ATK 1700 DEF 1000 Before damage calculation, if this card is being attacked by an opponent's monster, and was in Attack Position at the start of the Damage Step: Inflict damage to your opponent equal to the attacking monster's ATK

Luffy deck tried something a bit different, although with not much success

I highly suggest you make Ariels 'cost' much higher because based on most of these effects, added to the fact there are plenty of Life Gain cards to trigger their effects way to easily, the cost definitely needs to be 2000+ or more