mtg brothers war commander precon Weekly Update (Nov 12): Deck Upgrades What’s the ultimate #commander precon

If one of the two target creatures is an illegal target when Trial of Agony resolves, the remaining creature's controller must choose the remaining creature

Blue Sun's Zenith Braingeyser Channeled Force Commander's Insight Damnable Pact Drown in Dreams Eldritch Pact Expansion // Explosion Fascination Here Comes a New Hero

Constructed players can even maindeck this in the right meta

Sneak Attack had a similar effect with some excellent reprints, most notably Oona, Queen of the Fae, Obelisk of Urd, and Notorious Throng

Syr Konrad, The Grim: Whenever a creature goes to the graveyard, Syr Konrad is spotting it and giving thin cuts to your opponents, in a way that supercharges Valgavoth