what are break cards pokemon - Noivern-Break (113/162) Card Number / Rarity Pokémon BREAK (TCG) - Bulbapedia,

Archmage Emeritus draws a card for each cast

So if you see something like Emeritus of Ideation's M 0045, that final M letter means you've got yourself a mythic

If this happens, those triggered abilities are put onto the stack and players receive priority in that cleanup step to cast spells or activate abilities (normally, no players may take actions during a cleanup step)

Houndoom #8 (Neo Revelation, Holo Rare) As the hobby matured into the Neo era, so did Aritas range, and his Neo Revelation Houndoom is one of the most striking results

So, if you use Mathas, Fiend Seeker to counter up Loris Wall of Tears, then when that Wall of Tears bites it, everyone other than Lori will draw a card and gain two life