For two mana, you get a Black Sorcery spell that can destroy any creature or enchantment you want, and the only other cost is that you lose life equal to that cards mana cost - thats not a bad thing with Deaths Shadow
In the worst case scenario youre getting a 4/4 creature for six mana before Vivien gets taken off the board
Beyond Boosters ArriveWhat Are They
While that means you can store +1/+1 counters on a land after a board wipe, its secondary ability also allows you to move things like loyalty counters between planeswalkers
The amount of turns and effort required to get there that way is immense and, frankly, its not worth it
Kydele is a great way to generate mana, as each card you cycle gives a colorless mana that Kydele can generate, either to cycle more or to cast spells