Bria, Riptide Rogue | Legendary Creature | Otter Rogue | Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Other creatures you control have prowess. (If a creature has multiple instances of prowess, each triggers separately.)
Whenever you cast a noncreature spell, target creature you control can't be blocked this turn. | Borja Pindado
Alania, Divergent Storm | Legendary Creature | Otter Wizard | Whenever you cast a spell, if it's the first instant spell, the first sorcery spell, or the first Otter spell other than Alania you've cast this turn, you may have target opponent draw a card. If you do, copy that spell. You may choose new targets for the copy. | Joshua Raphael
3.5 LSV
Ral, Crackling Wit | Legendary Planeswalker | Ral | Whenever you cast a noncreature spell, put a loyalty counter on Ral, Crackling Wit.
+1: Create a 1/1 blue and red Otter creature token with prowess.
−3: Draw three cards, then discard two cards.
−10: Draw three cards. You get an emblem with "Instant and sorcery spells you cast have storm." (Whenever you cast an instant or sorcery spell, copy it for each spell cast before it this turn.) | Rudy Siswanto
5 LSV
Stormcatch Mentor | Creature | Otter Wizard | Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Instant and sorcery spells you cast cost {1} less to cast. | Manuel Castañón
2.5 LSV
Tempest Angler | Creature | Otter Wizard | Whenever you cast a noncreature spell, put a +1/+1 counter on Tempest Angler. | Raluca Marinescu
2 LSV