Not very flashy but it provides a ton of consistency to the deck, card filtering and then flipping into great mana-fixing ramp
Its ability to produce mana of any color is valuable, and more importantly, it's a ramp creature that can't be dealt with by conventional removal thanks to hexproof
That's very build around-able as a leader, with cards on your end that are fine getting played on your turn and cheap while your foes won't have built around it
Darettis ultimate isnt needed to win a game, but if you do get it off youll be pretty hard to beat when a lot of your permanents keep coming back from your graveyard
So far, we have two Magic the Gathering sets that are set in the Dungeons & Dragons universe, giving us MTG cards for the likes of Astarion, Lae'zel, Wyll, and Shadowheart