But for those who dont care about card lore, the Steelswarm were a group of insectoid monsters which focused on tribute summoning, by then a long-forgotten mechanic
Your opponent runs out of Active This doesn't mean there aren't more Pokemon to place somewhere in their decks, mind you
Whereas, the Mythical Island version can spread out its damage output and cause further problems for the opponent
Finally, the newest Special Condition is being Burned, which acts much like being Poisoned but results in two Damage Counters being placed on the afflicted each turn instead of one
Effectively, this means from the stack or the battlefield, the two zones where they can be back face up
The deck also has removal like Swords to Plowshares and Generous Gift, just in case