mtg unglued cards Magic The Gathering - Fowl Play Editors note Magic the Gathering Double Play

You could give them genuinely useful things, double-sided effects which work the same regardless of who controls them, or any number of actively detrimental effects

Most sets have a draft common common or uncommon that can repeatedly inflict one damage on each opponent just by playing other cards, like Firebrand Archer or Erebor Flamesmith

"Magic Untapped - Upping the Ante: Remembering when your opponent's Magic cards were the prize"

While there are only 21 Otter creatures across MTGs history, some of the best Otters ever have some potentially game-breaking abilities as well as synergistic play patterns that go beautifully in a spells-matter deck