Kenrith, the Returned King You arent playing one of the most popular 5-color commanders for its card-draw activated ability, but its there, so welcome to the top 10 Kenrith, the Returned King
It has three different effects that trigger whenever you attack
Much like Nicol Bolas, its a card that can come down early, pose a substantial mid-game threat, and then help close out the game late
You get infinite black mana, infinite death triggers, and infinite sacrifice triggers by giving Mairsil undying until the end of the turn
It draws and discard cards, plus gives +1/+1 counters if said discarded cards were nonlands
The answer is a combination of product strategy and what could be called the lottery ticket effect