Do the rules actually say it has to be opponents creatures that block? Sure, you can't actually declare your own creatures to be blocking, but if it just happens...

Anyhow; actually useful, since both he and the wolf survive; so effectively makes a wolf a turn - but gets hurt doing it.

Given dogs always seem to have at least three more legs than they know what to do with when they try to get moving, this felt appropriate.

LOL. You're right, you can't choose to block your own creatures. I don't know of anything that explicitly prevents a "put a creature onto the battlefield blocking" -- I assume it comes down to whether other parts of the rules are written with the assumption that the defending player controls all defending creatures or not.

For that matter, given the "rules on the card override rules of the game", I guess you could have a card that says "target creature attacks its controller this turn".

But it would probably be simpler if this card said ": Put a 2/2 wolf onto the battlefield tapped" :)

Having just read through the rules for the Declare Blockers and Combat Damage steps, astonishingly, I don't think there's anything that this would break. Which is awesome. The flavour is fantastic.

To jack: And "Having taken one damage this turn, and this card takes 2" (Besides, goblins prefer silly to simple)

Glad this works. Inspired by a bunch of stuff; but directly Sharonar, Horsemistress