The Best Relentless Rats

[Chromaticus]

@Dunadain's Yidaro, Wandering Monster monster thread got me thinking, because I briefly played a Yidaro, Wandering Monster Jeskai control deck in the early Ikoria standard - 4 Yidaro's all cycling for profit and an eventual beater…

What would be your o in for the best card in Commander to receive the Relentless Rats treatment.

It's probably just Sol Ring — but let's go with cards that have some inherent self-synergy for the thought exercise!

[Dunadain]

All the Battalion Foot Soldier type cards (there are three of them) get very silly.

Biovisionary probably decent. Maybe Hedron Alignment.

All the cards with "whenever ~ or another ___ enter the battlefield" become fun. Things like Field of the Dead or Thieves' Guild Enforcer.

[Treamayne]

What would be your o in for the best card in Commander to receive the Relentless Rats treatment.

I'm not sure what the bolded part is supposed to say, but I think you are asking what cards should have "you may play any number of <this>." Is that correct?

• Flame Burst/Pardic Firecat (and similar) is an obvious pair.
• Powerstone Shard would be nice, but probably broken - likely better with a Seven Dwarves/Nazgûl template (maybe limit to five?)
• Aurochs would be huge. Back in IA/All Type 2, I used to try using Clone (and similar) to get "moar stampede."
• Also, the Original MtG Voltron (Tin-Wing Chimera, Iron-Heart Chimera, Lead-Belly Chimera, Brass-Talon Chimera - getting rusty, had to look up BTC - thought it was Bronze for some reason) would benefit in EDH with such treatment (or just make more with new keywords - e. g. Pewter-Claw Chimera for Menace)

There's probably more, but that's off of the top of my shiny bald pate.

[darrenhabib]

Accumulated Knowledge would get out-of-hand pretty quickly. You'll be discarding a bunch of Accumulated Knowledge due to hand size. So you'll be doubling each time you discard end of turn.

[folding_music]

Surging Aether seems ummm balanced when you have 59 of them in yr deck

[Dunharrow]

I am less interested in cards that can have any number of copies and more interested in cards like Nazgûl and Seven Dwarves that allow you to play a few more copies in Commander.

[TheAmericanSpirit]

Anything with Ripple would be instantly bonkers. Things like Charmed Stray also get pretty nutty with great alacrity.

For my money though, the best overall card to have this effect would be Rite of Flame or Manamorphose. Easy mode storm right there.

[Ruiner]

Furnace of Rath

Let's get this game done quick.

[DirkGently]

I am less interested in cards that can have any number of copies and more interested in cards like Nazgûl and Seven Dwarves that allow you to play a few more copies in Commander.

Agreed - having 9 nazgul adds some consistency in a fun and balanced way. Having 45 relentless rats and a bunch of tutors for Thrumming Stone makes for consistency in an extremely tedious way.

But as far as the prompt, I know ripple already got mentioned but surely Surging Flame is the correct answer. 65 copies or so, plus some lands and as many Lotus Petal adjacent cards as you can find. Pretty close to a guaranteed T1 win, even through countermagic.