Greninja Another good card for a Water Deck is Greninja
'Tyrannical Tail' sure costs a fair amount of Energy, but the chance to dish out 360 damage in one fell swoop without any drawbacks is already proving to be too appealing to ignore, with plenty of early Scarlet & Violet era decks online featuring this big shot Water-type
For example, a normal Art Series version of Zidane, Tantalus Thief is as bulk as it gets, but the gold stamped version has a market price over $3, which isn't insignificant for a piece of cardboard that people often leave laying around on the table after cracking a new box
There is no difference in casual or tournament play, if they follow official rules
This 3/2 Artifact Creature reduces all your artifact casting costs by one generic mana
While Witherbloom turns creatures into a resource for massive spell discounts, Quandrix takes a much more familiar Simic route: ramp hard, cast huge spells, and use Cascade to make every big play even bigger