one piece tcg starter deck straw hat crew Usopp [Starter Deck: Crew] Release Starter Deck 1 ONE Piece TCG: Straw HAT

This ability can't be countered except by spells and abilities

But for some reason, Wizards decided to make the sticker mechanic legal in tournament formats

If an exerted creature is already untapped during your next untap step (most likely because it had vigilance or an effect untapped it), exert's effect preventing it from untapping expires without having done anything

So, if you do need to pack an extra kill-spell, what should you take

If enough -1/-1 counters are put on Bloodtracker at the same time to make its toughness 0 or less, the number of +1/+1 counters on it before it got any -1/-1 counters will be used to determine how many cards you draw

And I let @scglive know