Volrath, the Shapestealer + Viridian Joiner + Gilder Bairn

Volrath, the Shapestealer

Viridian Joiner

Gilder Bairn

How it works

1. Activate Volrath by paying 1, causing Volrath to become a copy of Viridan Joiner until your next turn.
2. Activate Volrath by tapping it, adding at least seven .
3. Activate Volrath by paying 1, causing Volrath to become a copy of Glider Bairn until end of turn.
4. Activate Volrath by paying 2G/U and untapping it, proliferating all the counters on target permanent.
5. Repeat from step 2.