Sacrificing your own creatures is, as already underlined, a big point in the deck, seven creatures target it
Im coming around on Gev, Scaled Scorch
After all, we're looking at 6+ new sets for Standard every year
A checklist card has a normal Magic card back
There's a smattering of cards that specifically interact with otters or make otters, and many of them are nice, efficient cards, even for a spellslinger deck with inexplicably few otters: Lilypad Village Valley Floodcaller Harnesser of Storms Otterball Antics Pearl of Wisdom Rockface Village Splash Portal Stormchaser's Talent Valley Flamecaller All of this adds up to an Izzet Prowess deck that features otters, which is awesome
Hollow One and Vengevine might not be the best version of this archetype but its where I want to start