This characteristic is rather accurately portrayed in the Lorcana card Scrooge McDuck, Richest Duck in the World - which depicts the character standing atop literal piles of gold, jewels and treasures
Kefka Palazzo is a real fan-favorite among Final Fantasys extensive cast of villains, known for his off-the-wall personality and his world-ending power
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Darkness Crystal's first ability)
And he works well with Floodborn Madam Mim and Gruesome and Grim allowing you to play him for free and give him Rush
If you're totally new to trading card games, this is a seaworthy starting point
Should I buy Attack of the Vine booster boxes before the release