Random Generator gave me Island Sanctuary and Changeling Berserker. Looking at the skeleton, it seems that I have space for a White Rare or Mythic, and a Red Common. Well, those two cards don't equal common in my mind, so let's see what I can do.

Haste is very irregular for a white creature, but everything else about the card feels white, and it feeds into the mechanic, so I'm hoping that gets a pass. Mostly, I didn't want to have a direct translation of Island Sanctuary, since that could lead to some very boring games. Instead, I played up the "If you want to" aspect and contrasted it against haste.

I would have stopped there, but that just didn't read 'rare' in my mind. So I tried to sneak creature types in, and turned the Champion's ability into a possible reapeatable effect. The Champion's now an odd duck, in that your opponent has to choose whether playing a Human is worth returning this Elf Knight to your hand.

All and all, I think the card's better off without the last sentence. I'll probably end up cutting it in a day. Maybe I can find an uncommon worthy of bumping to rare.

Oo. Rare to find a card with such obvious tension. You have to choose either a 5/3 haste (Skizzik?) or the False Peace, not both.

I do like the potential repeatability, but that's a decidedly odd line. It might be more natural as something like "Whenever three or more creatures deal combat damage to you in a single combat phase" - i.e. when you really need that Island Sanctuary again.

If you do cut the last line entirely, I agree uncommon is the most natural place for the result, but I could see arguing for rare based on the tension.