mtg cards like relentless rats I had the wild opportunity to work on a card a few years ago and it came out a few months ago. My take on the classic card Rats. It's Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats Magic the Gathering MTG -

Azra Smokeshaper Biting-Palm Ninja Dark Leo & Shredder Dokuchi Shadow-Walker Dokuchi Silencer Elektra, Daughter of the Hand Fallen Shinobi Foot Elite Foot Mystic Foot Ninjas Heroes in a Half Shell Ingenious Infiltrator Ink-Eyes, Servant of Oni Inkrise Infiltrator Karai, Future of the Foot Kotose, the Silent Spider Krang & Shredder Masterful Ninja Mukotai Ambusher Nashi, Moon Sage's Scion Nashi, Searcher in the Dark Nezumi Prowler Ninja Ninja of the Hand Ninja of the New Moon Okiba-Gang Shinobi Orochi Soul-Reaver Oroku Saki, Shredder Rising Overt Operative Satoru Umezawa Satoru, the Infiltrator Shark Shredder, Killer Clone Shredder, Shadow Master Shredder, Unrelenting Silent-Blade Oni Silver-Fur Master Skullsnatcher Splinter, Hamato Yoshi Splinter, Radical Rat Splinter, the Mentor Super Shredder Tatsunari, Toad Rider Throat Slitter Throatseeker Undead Hand Ninja Yuriko, the Tiger's Shadow Yuriko, the Tiger's Shadow

It also combos well with any deck that cares about moving counters, as with Power Conduit, or specifically the ability to instantly win the game if you can move counters over to Darksteel Reactor

Yes, I realize that I recommend a safe

My instinct is to start 1-2 of these in every deck, whereas in most formats that number is 0-1