Woodland Weavemaster + Agatha's Soul Cauldron + Presence of Gond + Devoted Druid

Woodland Weavemaster

Agatha's Soul Cauldron

Presence of Gond

Devoted Druid

How it works

1. Activate Woodland Weavemaster using the ability granted to it by Presence of Gond by tapping it, creating a 1/1 Elf Warrior creature token.
2. When the Elf Warrior enters, Woodland Weavemaster triggers, giving it +1/+1 until end of turn.
3. Activate Woodland Weavemaster using Devoted Druid's second ability by putting a -1/-1 counter on Woodland Weavemaster, untapping Woodland Weavemaster.
4. Repeat.