Created for Challenge # 068. I count at least 8 or 9 different ways in which this is horrible design. Frankly, once you fix them all I'm not sure there's anything left to salvage, but if anyone's up for trying it, I'd love to see what you can manage!

I love that casting cost. I could just imagine someone trying to argue that their friend should run this card in their black/red deck while explaining why hybrid eases mana restraints. :p

What's funny is that does sometimes feel like the right cost, if something has to be red, but also plays in shared space that's a little bit more black but not exclusively. But I think it's normally a bad idea, and certainly with and :)

I'm having fun with this challenge trying to work out what all the badness is. So, let's see: ­

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• It's a 2/7 in Red/Black ­
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• It's common ­
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• It's got a weird casting cost ­
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• It's got life-gain-caring (not really red)... ­
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• and type mutation ­
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• and non-standard counters (+3/-1) ­
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• It's got the untap symbol ­
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• It cares about multiple creature types but only makes things Mutants ­
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And a non-optional advantageous trigger...

There is nothing wrong with this card's creature type, since Infernal Spawn of Evil has grand-fathered it in. ;)

Cmeister got most of the deliberate badnesses. A couple of others:

• It overwrites creature types (making your Bird Soldier Cleric into just a Mutant) and then counts the creature types you have
• It explodes if you have Mistform Ultimus around: any tribal effect needs to be careful that the numbers it can produce don't go 1, 2, 3, 437!
• The creature type doesn't match the name
• The activated ability has a number of targets determined when it's put on the stack, but that number of targets can change by the time the ability resolves. That last is the one that I hinted was also present in Rafiq, Who Climbs Clouds. It's a subtle problem but nonetheless a real problem, and not always trivial to fix.

Ah! I'm glad someone made a card with a problem with targeting. I'm impressed it was possible to squeeze that much onto a card.

I'd also add

• the abilities don't really make sense together
• "For each creature type among creatures you control, Mutato Devil deals 1 damage to target creature or player" is ambiguous, or at least confusing, as vitenka's card pointed out
• There's no good reason to mix mutatian-flavour with demon-flavour

But that's about as far as I can go, I think that's criticised just about every part of the card other than "creature" which seems ok :)

­Demonic Influence taking the +1/-1 aspect of the card and making a card that just does that.