mtg commander more than 100 cards Orvar, the All-Form COPY PERMANENTS Magic Custom Deck MTG Commander Deck EDH Deck

While Im not sure if it truly makes the cut in cEDH, you could also cast Return the Favor to make your own copy of the enters-the-battlefield ability of Thassas Oracle to win on top of their ability on the stack

For each opponent who doesnt, that player loses 2 life and you draw a card

The bar for Eternal-playable -X/-X sweeper is set somewhere between Toxic Deluge and Languish

17 Cirdan, The Shipwright Diplomacy In Action Voting is an incredibly underrated mechanic in Commander

Check out the Alchemy: Tarkir Spellbooks article for details on those cards.

Ive also been trying to put together a Pauper madness deck playing Hell Mongrel alongside the card it is a callback to: Wild Mongrel