digimon card collection TCG: Classic Booster Box Display (24) game mat and score counters. Digimon Animation Series 25th Anniversary

Roar with the thunder

all refer to effects that restrict your opponents' ability to play the game

The effect goes thus: Ancient Fairy Dragon "1 Tuner + 1+ non-Tuner monsters Once per Turn: You can Special Summon 1 Level 4 or lower monster from your hand

it loses 500 ATK for each Xyz Material attached to a monster you control

Needless to say, the same goes for Invocation

Later, the Agent also has to deal with a government conspiracy that wants all Digimon dead, regardless of whether they're friendly, and many of your former human allies end up betraying you in favor of said conspiracy due to their own traumas from the Titans' crimes