Though of course the cozy art on this Whimsicott ex card (a Special Illustration Rare variant) is wonderful, its definitely not a slouch in terms of its stats and abilities either
Horror and Room are subtypes, not card types
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
Not only does it create Zombies, but the more you have, the more you scry to find what you need, while also draining the opponent for even more inevitability
We have seen this card basically shrug off one reprint already