I'm not sure if there's a cleaner way of saying that... but assuming people understand what I'm talking about, I may have come up with something will pop up on a few other cards.

Also, I'm a bit proud of myself for figuring out how to get "≠" in the flavor text. Good old copy/paste... you win again.

Really bad idea for an alternative text:

"Counter target spell unless its controller pays , , , or ."

B-p

Yeah; I think "differently coloured" works.

Though now you've got me wondering whether paying two mana from a source is acceptable - it feels like it shouldn't be.

Ah. I get the impression that 'differently colored' did not work. I was asking for an alternative to Mana Leak, but I think you thought the card requested that your opponent paid two different colored mana when he cast the spell.

Well, that's awkward. And, now that I look at it, that's a hard distinction to notice, since you just turned the word "pays" into "paid" in your own mind and got a different spell. Hmpf. I'm not sure how to resolve this, but I'm thinking I'm going to have to sneak "" into the text, even though it will make the card read sloppier...

Uh - no, I was reading this as a variant on Force Spike and pals; only with a colour restriction. Though, saying that, a counterspell that can only kill mono-PAID spells, (rather than just mono-COLOURED spells) is an eeenteresting idea. But a different one.

I think "two mana of different colors" reads better, but I don't see anything wrong with card.

Good. Glad the only one who got confused was me, when I over-analyzed. Switched to Dude's suggestion.