Another solution is simply to play Destructive Flow in a deck full of cheap cards and kill your opponent with one- and two-drops while no one can cast anything bigger
1 - Moana - Curious Explorer (Iconic) The demand on this card is honestly mind-boggling
While this version of the mana curve is useful, it isn't a rule of deck building
These creatures have a long history in the card game Magic: The Gathering, and there have been many, many cards created for them
Credit: Wizards of the Coast Venat, Heart of Hydaelyn / Hydaelyn, the Mothercrystal BPhillipYork: Great for legendary good stuff, Jodah, the Unifier or Captain Sisay, exiling a troublesome permanent for 7 mana is expensive and it's okay once it flips to a 4/4 God creature
Well be sure to update these rankings as new starter decks emerge and the meta shifts which could make previously maligned cards a better pickup.