So basically, while the card is on board, each player has to specifically keep track of how many monster effects they've activated that turn in relation to how many different card types listed on the card effect exist on the field, and this effect actually affects each player separately as well during each turn
My only concern when it comes to Mewtwo is how to power it up consistently, turn after turn effectively
I dont expect Wizards to go back to the 001/001 well just yet, but we may see XX/010 infinity stones or similar, which would be more incredible pulls worth a pretty penny
Theme Booster Theme boosters are boosters with 35 cards from a single theme
And on top of this, as a Level 4 monster, her ATK (1800) and DEF (600) are a sight for sore eyes the later you get into the game
it just requires the extra step of comparing life totals to meet favorable conditions