­Tentacle Spire + Sip of Hemlock

You know, there's such a thing as taking "common creature destruction is a bit too good; make it worse" too far.

I'm just outright gonna say that Sip of Hemlock is a bad (though flavourful) card, and you (the mtg design team) should feel bad. It's not even instant! It's Murder and then three extra mana to deal 2 damage.

And, yeah, ok, a combat trick to block stuff; it's outside white, but both blue and green get flyer-hate. At least it only costs one hybrid mana. I'd usually prefer Jump, so that's a pretty bad card too.

So. Make a card at common that you'd feel bad about being forced to pick, even though it technically does something useful (to opponents creatures). Three colours used, so we'll go for this one.

Odd place for a mix to be - white gets lots of combat tricks, and creature nerfing. Red... really doesn't. The closest it gets is "Must attack if able". And, huh; there's a common trope that hasn't been a magic card for AGES, and I can use up a common name in a "This will be a keyword in future" way.

So that's nice. But has kinda omitted all of the whiteness.

I could actually make this useful, you know - I could add in something on the white side that erased other abilities and made it so that this was actually useful as a way to get rid of utility creatures (rather than just forcing them to act in main1)

But no; I'm supposed to be making a bad card. So here it is. Beserk; not pure-red; not with a "destroyed if they do not" rider.

At least it's simple.

*berserk. Also, Berserk

Oh; I mis-spelled it while searching gatherer. (And get the odd half-card bug on hover there.)

Well, never mind. "Must attack each turn if able" is the obvious candidate for a keyword of that type; so I'm reclaiming it.

(Decided against changing it to: "Enchanted creature is Serk")