Whenever Maui is used to challenge another character, the player can add an action card from their discard pile to their hand, which offsets the continuous problem of running out of cards
Its biggest tricks rely on making Illusion cards Vanish from the field, only to return to your hand, gain some insta-lore, or manipulate the board state
Brunos Return lets you bring back a valuable card to your strategy that might have been dealt with earlier in the game, keeping you in the game longer
Play until someone reaches 20 Lore, winning the game
If damage that can't be prevented is dealt to the target creature after Gatta and Luzzu's last ability resolves, you still put that many +1/+1 counters on it
At least from an MTG perspective, this puts Sin alongside graveyard commanders like Muldrotha, the Gravetide, but with the chaotic twist of that aforementioned cycle