This will likely get jammed in Prossh, Ghave and Skullbriar decks as well as being a good commander in its own right
Of course, as always in Magic, there are exceptions to everything
It reminds me greatly of Adventure, in that its a consistent additive line that manages to chew through opposing handtraps with a shrug
You get a one-time boon with "When you cast a creature spell, that creature enters the battlefield with an additional +1/+1 counter, trample counter, and vigilance counter on it." A one-time boon is a single-use triggered ability with no source
Afterall, wouldnt they rather have Treasure
Low combat relevant does detract from the baseline value of this, as does a polar performance