Id keep an eye on it, and $12 for the foil might look appealing in a year or two when this is $20 in foil
Hand Disruption: Some Trainer cards force opponents to discard cards from their hand, disrupting their plans
The latter is that your critter tokens have lifelink and vigilance which few build around
A deck that focuses on graveyard recursion or has ways to benefit from discarding cards would benefit from including Gamble in their strategy
Plus, you need to put your opponents' life totals to zero anyways, so it's a win-win situation
There you work towards the same goal as the rest of the world with the same card pool, the results tend to get very similar, and you'll be rewarded for doing the same thing per archetype, ending up playing the same cards, doing the same thing