As for how the deck plays, it tends to set up early and do Simic things, dumping eight mana on the board before it really gets going
Whenever it attacks, it gives cascade to both your next instant and sorcery spell of that turn
Todays the day when the first round of my StarCityGames.com preorders from Commander Legends: Battle for Baldurs Gate should be arriving in my mailbox, and I am so stoked
So, with cards that give you the ability to draw and then discard one, or even when an opponent makes you discard a card, you just get to swing on people for, relatively, free
This does cost a ton of mana, however: six mana to cast Niv, minimum one mana to enchant him with Curiosity, and another minimum one mana to draw a card (Opt), for a total of eight mana minimum for a Curiosity Combo win