This might well be an easy target for removal but instant sac outlets mitigate that, as does the fact that many of your better engine cards in black are flimsy dorks as well
Legendary Creature - Ooze Commander (CTRL to add secondary) Artifact Ozolith, the Shattered Spire If one or more +1/+1 counters would be put on an artifact or creature you control, that many plus one +1/+1 counters are put on it instead
Also, its not legendary so it works well in multiples, since both the lifegain triggers and the +2/+2 bonus stack
How much money did I waste
Of course, youll probably want to put this card in Selesnya +1/+1 counter / proliferate decks to grow the Hangarback faster
Olle Rade won the first Worlds for which players got an Invitational card as a reward, but he took a break from Magic shortly thereafter submitting a joke design that was politely rejected