@aelien Why is that? I find pre-game mechanics to be almost entirely unexplored. I think Vintage NEEDS more things like this to level the playing field actually. I love that this card says cmc 2 or less. This rules out Oko and Dack and Teferi from being included in a deck. I LOOOVE that restriction.
Most of the time we are facing BUGr or UGR and not strictly BUG, and each of these decks have access to Lightning Bolt. I have tried Mirran Crusader, and while it's occasionally good, I don't think it has enough firepower across all the xerox variants out there to have staying power. I hope that helps clarify my thoughts here.
For the mana, I think Thrun is just better. 4/4 for 4, hexproof, regen, and can't get countered (just like cavern ability grants). Not human, but GG isn't hard to get and you are looking for the bonus off cavern-naming-human which Thrun has naturally anyway. The only plus to this, I think, is flash...but for being chumpable by a mox-turned-elk, this card seems worse than Thrun - even in humans.
The idea is to give hexproof to your real bomb like knight or kambal. Thrun is just a 4/4 that gets chumped. That is why it sucks in my opinion.
@BlindTherapy From experience, The "turn your guy into a 3/3" ability of Oko is the killer for creature-based cavern decks. Like a Knight of the Reliquary getting "Elked" is just so painful. Sylvan Safekeeper only stops the ability ONE time. It can also easily be Wren & 6ed. That's the reason I don't love Mother of Runes either.
So, I've been looking for a card to counter Oko for a while now that can be played in a Cavern human list. Could this be that card? It's a bit high on the curve, but I was wondering what people thought.