Focus on four main criteria: centering, corners, edges, and surface quality
Nethroi's triggered ability can return any combination of creatures whose powers total 10 or less
If a player has fewer cards remaining in their library than the number of rad counters they have when the triggered ability resolves, they'll mill as many cards as they can
This again counters the discard two energy cost of Mewtwo's 150 damage attack, as the standard energy joins the Gardevoir energy each turn to add two at a time
The silliest thing about this Niv-Mizzet is that he combos with his older iterations, going infinite with Niv-Mizzet, the Firemind which is bound to be a blast to pull off
The Return of Punch Out Ability counters are fairly simple to understandyou put a Flying counter on a creature, now it has flying