The Floodborn card is one of the Amber Lorcana cards in The First Chapter that helps players to find what they need from their deck, with the option to exert characters costing two ink or less to draw cards from your deck
Generally, the first milestone is with World Breaker and Devourer of Destiny at seven mana each, and then Emrakul, the Promised End at 13 mana
It's strong in ETB heavy brews like midrange and blink, sacrifice brews where you can sacrifice to something like Attrition and then come back, Aristocrats where you can trigger Blood Artist for wins, life gain for lifelink shenanigans, Voltron and equipment that invested in equipment infrastructure to and any heavy creature build
She is a high-risk, high-reward glass cannon
With proxies, you can make a highly competitive deck for a fraction of the cost