"Yorvo Lord of the Garen Preserve"
Legendary Creature - Giant Noble
Yorvo Lord of the Garen Preserve enters with four +1/+1 counters on it.
Whenever another green creature enters the battlefield under your control, put a +1/+1 counter on Yorvo. Then, if Yorvo's power is greater than that creature's power, put another +1/+1 counter on Yorvo.
0/0

A couple corrections:

1) It definitely says "then, if that creature's power is greater than Yorvo's power", not the other way around.
2) "Coto de Garen" is just the Spanish translation of Garenbrig. (source)

There's probably a way to interact with counters in a nearby set for this to not be a 4/4.

My guess is that you will be able to remove them or move them so that you can then use smaller creatures to put 2 counters on this.

I wonder how often you'll get the double trigger when this already starts out pretty sizable. Maybe with hydras and such?

I imagine you probably get the double triggers pretty often, considering he just constantly makes himself bigger, thus further enabling himself to get those triggers more often.

Just run him in a deck with all the mana dorks, slam him on turn 2, then slam a couple more down on turn 3. BAM, turn 3 attacking with an 8/8. In magical Christmas land obviously, but do-able.

No as pointed out op is a typo and he double grows from bigger creatures. Having it be the way it is in op is just so blatantly overpowered

the big stymie is no trample…..but that's what rancor is for