Seems kind of stupid :P

Basically a Bestial Menace.

­Bestial Menace is an uncommon. Making it more complex shouldn't make it a common.

I don't get why shimmer is not realized as a keyword action:

> When ~ enters the battlefield, shimmer 1, then shimmer 2, then shimmer 3. (Create three 0/0 Reflection creature tokens. One with a single +1/+1 counter on it, one with two counter, one with three counters.)

And then I would re-think whether this should be an enchantment or sorcery in the first place. There is probably some thought going into the enchantment part, but it makes sense on other examples and less sense on this.

Yes, but why is Bestial Menace an uncommon? We have had cards that produce multiple tokens at common before. I think one of the key things why bestial is uncommon is that those tokens are of different types and you have trouble tracking their sizes without the appropriate token cards. +1/+1 counters remove this problem. This is obviously an impactful card though, so common might be pushing it, but I don't think it's completely infeasible.

Without token cards these two are exactly equally hard to track, no?

"Eh."