Once a creature that has reach because of Sphere Grid's last ability has blocked a creature, removing all +1/+1 counters from that creature or causing Sphere Grid to leave the battlefield won't cause that creature to stop blocking
Is it another adventurer like you
The same goes for Final Fantasy: Through the Ages cards, which are marked with an FCA abbreviation and a Moogle logo
Drivnod, Carnage Dominus Exxaxl: This is the second ever card we see that cares about doubling death triggers outside of Teysa Karlov
Through the Ages will very likely, and at long last, bring partner pairings into the Arena format thanks to Bruse Tarl, Boorish Herder, reimagined as Final Fantasy XVI's Hugo Kupka (who is not really one of the good guys, as you may guess from the card art), and Tymna the Weaver as Cecil Harvey, illustrated by the legendary Yoshitaka Amano