The more I play, the more I like having player aids like this so I spend less time racking my brain for exactly how a complex mechanic like Ring-tempting works
After storage, insurance, and transaction costs, the cashflow is actually negative
WATER monsters also often have effects related to discarding or otherwise removing cards from the opponent's hand (such as through the effects of "Evigishki Gustkraken", the "Deep Sea" monsters, or "Moulinglacia the Elemental Lord")
To reduce the price of some of your spells like Jeska's Will or Cryptic Command, you can use some alternatives like Pick Your Poison or Titania's Command
Laboratory Maniac is a three-mana blue creature that lets you win the game if you try to draw a card when you have no cards in your library
It also lets you invest excess mana in spells for a later turn, which can really help smooth out the clunky curve even more