The leading reason is likely the more powerful graveyard hate, such as Endurance
This is a post about a card game, but its also a post about prompt engineering and the use of programmatic scaffolding around an LLM, and I hope you may find it interesting even if youve never played Magic
Kyodai, Soul of Kamigawa Kyodai, Soul of Kamigawa enters at instant speed and immediately shields another permanent by giving it indestructible for as long as you control Kyodai
If thats another creature, it gains the following ability until end of turn.) Menace Illustrated by Denis Zhbankov Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Well, by adding a double exile effect when its cast, of course
All these lists use the duplication effects in one way or another, but Vesuvan Duplimancy will have impact in all of them either in the good old or completely new ways