Zachary, Librarian of Hope

Research - Place a +1/+1 counter on Zachary, Librarian of Hope after each turn it is on the battlefield.
Research Summoning - When Zachary, Librarian
of Hope reaches a power level of 3/3, place a
Fiona, Cutthroat Musician token onto the
battlefield, tapped and attacking.
He is incredibly smart, much smarter than he gives
himself credit for. It takes time, but once he gains confidence, he is unstoppable.