Amped Raptor People used to build entire decks around the idea of floating Burning-Tree Emissary into extra copies of itself, and Amped Raptor takes that up a notch
The Tabernacle ties up all your opponent's mana, assuming they have plenty of creatures out, forcing them to choose to either give up a bunch of their creatures in exchange for a spell or to keep as many of their creatures as they can at the expense of spending all their mana
Just make sure not to use one of your other flicker spells on it once you take control most will return the flickered creature to its owner when it reenters the battlefield
In terms of in-game ability, this Tigger can gain one point of strength and one lore any time you play an action
While it seems consistent and powerful, the format hasn't really had to tech for Storm recently, which makes me wonder if its popularity will wane once people start playing more Storm hate in their sideboards
Snapcaster Mage is too powerful to reprint in Standard, Mox Opal is a bizarre inclusion for an innovation product like Battlebond or Conspiracy, and judge promos are in too small a supply to affect prices