Activate Seismic Assault by discarding a land card.
Slogurk triggers, putting a +1/+1 counter on it.
Resolve the Seismic Assault ability.
Repeat from step 1 two additional times.
Activate Slogurk by removing three +1/+1 counters from it, returning it from the battlefield to your hand.
When Slogurk leaves the battlefield, it triggers, returning three land cards from your graveyard to your hand.
Cast Slogurk by paying E due to Primal Prayers.
When Slogurk enters, Aetherstorm Roc triggers, causing you to get E.
Repeat.
This vicious loop turns your graveyard into a perpetual engine of destruction, fueled by the relentless barrage of Seismic Assault discarding land cards to deal infinite damage. As those lands hit the graveyard, Slogurk, the Overslime happily stacks up +1/+1 counters until you can bounce it back to your hand, triggering its leaves-the-battlefield ability to reclaim all three lands. From there, Primal Prayers steps in to let you recast Slogurk using energy instead of mana, while Aetherstorm Roc quietly generates that necessary energy every single time Slogurk re-enters the battlefield.