This mechanic spans quite a few cards and offers bonuses, abilities, and unique effects when you have a full party i.e., when you control four different creatures with each of four D&D classes: cleric, rogue, warrior, and wizard
New listings appear constantly
I guess that a slightly-harder-to-counter Mirror Force for Fiend-Type monsters would be ok, but it's nothing exciting, and you could probably make a more useful card that have to compete with other cards with the same exact role
If there is one thing Sapphire decks do well, it's find a way to ink a lot of cards
This makes it one of the easiest early game Moves to set up, and with 40 damage, it can easily start knocking out Pokemon left and right
Being able to remove a threat and replace the card in your hand allows you to keep your shields up for the next turn