Not a crystal spindown , but a spindown for crystal counters , presumably
For example, with High Alert in play, Shield Sphere now functions as a 6/6 for zero mana
Actually, no one controls counters
Even within this limited pool of cards, there are a host of charming, flavorful nods to the Marvel Universe, like Doc Ock's 8/8 Power and Toughness and Pumpkin Bombs' use of Fuse counters (FYI: this is a counter we haven't seen in Magic since 2001, which is pretty cool in and of itself)
What about stax or control decks that lock the board on turn 3, making victory inevitable even if the kill drags to turn 7
This is a cute little card, but I wish this was a 2/3 or 1/3 for two instead of being a four-drop