It wouldn't effect any skill that doesn't target, so growth abilities would work normally. (except for oty, who would eat a random creature, but the +1/+1 would still end up on oty)
One of the main non-mutant entropy decks is werewolfs, but there's several others. Check out the mono decks section or some of the decks team
uses in the war for examples.
The main thing I go for with a lot of my cards though is that they shouldn't just strengthen existing decks, they should open up new possibilities for making decks.
I think this card would be interesting in a lot of things like an
/
deck, since
creatures hit hard but are vulnerable to creature control. You could use the dice to shelter your creatures while creature control spells are just as likely to hit the enemy as they are your guys.
It'd be useful in any deck of the "I summon creatures and they bash your face in" variety