Effects like the Historic banned Spreading Seas can fix this and, since Islandwalk is a recurring mechanic across Merfolks, it is probably worthwhile running some effects like that, making Master of the Pearl Trident an absolute menace
If you've gained life in the same turn before you cast it, however, it simply destroys all creatures as a board wipe
However, Oswald is more important than just a card
Of these, there are some good ones, but there are also many that are truly great
As its name implies, Rise of the Floodborn is packed full Floodborn characters that can Shift early and take your opponent by surprise
Adventures, which are kind of secondary mini-card effects within a cards text, make a return from Throne of Eldraine, a previous fae-inspired set from 2019