mtg oversized commander cards Otrimi, the Ever-Playful (Oversized) [Commander 2020 Oversized] draw a card and each opponent loses 1 life The Ur-Dragon (Oversized) [Commander 2017

The Ooze is able to recycle lost +1/+1 counters into Mutagen tokens, which can not only become new +1/+1 counters but also have other utilities as artifacts

Rona, Herald of Invasion / Rona, Tolarian Obliterator As a looting engine that untaps with every legendary spell you cast, Rona, Herald of Invasion helps you dig for answers or fuel graveyard strategies fast

You know the drill - rinse and repeat until Merlin has gathered 20 Lore

Since green is part of Gruul, you can even play protection spells such as Heroic Intervention to ensure your battlefield stays safe since you are likely to be a target for a board wipe.