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
Braids, Arisen Nightmare The new Braids commander could easily form a new Mono-Black Stax deck in EDH, albeit slightly grindy
Xyris, The Writhing Storm will make a 1/1 token whenever an opponent draws a card except for the first one they draw during their upkeep
When players reach Platinum, however, best-of-one wins only award one step, while best-of-three wins continue awarding two
By keeping an eye on market trends and staying active in collector communities, you can make informed decisions about when to buy, sell, or hold onto specific cards