Blue decks and blue cards have dominated so much of Magic for years and years, and its about time they had their comeuppance
That said, the one-shot potential for this Pokemon is the kind of firepower players like to wield
While it is weaker against mono-colored decks, it can still put in a fair amount of work over the course of the game
The deck then curves into midgame threats including the incredibly powerful Camellia (menace, summons squirrel tokens, adds +1/+1 counters to your entire army), Curious Forrager (returns a permanent from the graveyard), Honored Dreyleader (+1/+1 counters), and Corpseberry Cultivator (+1/+1 counters)
And thats before you even start to consider how efficient it can be to get value out of the cards being discarded
(Whenever a creature with afflict 2 becomes blocked, defending player loses 2 life.) Whenever a nontoken Sliver you control dies, amass Slivers 2