Biggay, Scourge of Elderhelm

Partner with McGeoff, the biggest gay
( When this creature enters the battlefield, target player
may put McGeoff into their hand from their library,
then shuffle )
Biggay comes into play with one infestation
counter. At the start of your upkeep,
put an infestation counter on Biggay. Then, if
Biggay has three or more infestation counters, transform him.