"If CARDNAME becomes blocked" is completely unnecessary: Trample only matters if the creature is blocked anyway, and likewise for rampage (but contrary to the reminder text, rampage bonuses only start at the SECOND blocker).

Mostly harmless.

[EDIT] with the new version, it's basically a bushido 5 that only works on offense.

Need a better name for this

I originally had it gain Trample and Rampage 5 but gaining rampage after it has been blocked wouldn't trigger the ability so I had to change it. Picture Bambi "hulking out"

Ah but if you read the highlighted page comments this isn't the original Rampage but my attempt to "Fix" the mechanic to make it more relevant/useful. New Rampage

Yeah just playing around with random ideas during my lunch break. Maybe "Whenever a blocker is declared against CARDNAME it gets Rampage 5 Until end of turn" this way, if i remember my timing correctly, the rampage comes into existence on declaration but before the creature actually becomes blocked. ???

Nope, sadly not, for the same reason "Whenever ~ attacks it gains vigilance" doesn't work.

didn't think so :-(

Anyways have "fixed it " now, with a proper name and all.

You can't use an existing keyword and change what it does; you need to use a new keyword.

This was an example of what I would do if I made magic - take some old, bad keyword abilities and tweak them slightly to make them better. Most cards with Rampage were way overcosted anyway so a small change like this did wouldn't break them.

BUT, in order to avoid ruffling feathers I have removed "New Rampage" and made it just text. It still works how I want it to sio I'm happy to make the change.