If you want to play a deck that ventures into the dungeon, play Nadaar, Selfless Paladin
Conclusion By printing your own proxy cards you can gain access to cards you dont currently own, playtest your deck build and most importantly preserve your high value cards in friendly matches
A commonly played answer, such as Spite // Malice that couldn't take out Black dorks wouldn't work anyway, Slay was commonly seen in sideboards as it was a free card with those cantrip fun times, and Spiritmonger could become White or Red if you needed it to
The upside, however, is that it allows you to copy your powerful tokens and overwhelm your opponent, which makes Populate cards worth adding to your deck
We already have a 6-mana sorcery speed mass removal spell in the Orzhov colors that lets you choose one from exile all dorks, artifacts, enchantments or planeswalkers: Merciless Eviction
(Or, you know, even before they are available.) Magic: The Gathering fans had something in common with Thanos even before these Infinity Stone cards came out: they can go a little mad trying to complete a set.