While this doesnt sound like much, the Pokemon in this game dont have much Retreat Cost to begin with, so reducing it by one is just as good as being able to swap out for free
Five-mana spells are expensive in modern Magic, but warp makes this wonderfully flexible since its a reasonable play on turn 2
Even the less desirable Mythics still offer new toys to existing archetypes: Platoon Dispenser is card draw for white tokens decks, Sarinth Greatwurm is another landfall payoff, and ok, well, In the Trenches is pretty mediocre but you get my drift
On top of creating two Construct tokens as massive threats
Pinging anything when you draw a card is very nice
Talking about the format before the event, we decided that people wouldnt be able to capitalize on the built-in synergies like bloodthirst, morbid, metalcraft, and tribal themes like they might ordinarily be able to