When he works hes huge, but when he doesnt at least you're not going to be set back terribly far
The deck has a very minor Enrage subtheme, which used to be a main mechanic for Dinosaurs back in original Ixalan that they mostly moved away from in this set: I count only 12 cards that support the Enrage theme, either being enrage triggers like Ranging Raptors or payoffs like Wayta, Trainer Prodigy
Watermark: Temur Illustrated by Wayne Reynolds Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Twelve mana seems intimidating, but its relatively easy to power Ghalta out on turn 3 or 4 with their cost reduction
More common are kinds that change a type based on flavor, like converting something to a vampire with New Blood, resurrecting a hero as an angel warrior with Ascent of the Worthy, cursing the greedy to become, um, walls with Aurification, or resurrecting cards as zombies with Dread Slaver