Whether you're piloting a proliferate engine, a toxic strategy, or simply want your deck to radiate celestial menace, these sleeves are built to keep your deck safe and sharp
The Swarmweaver There are more explosive or more consistent insect token generators than The Swarmweaver, and there are more impactful lords and payoffs that dont need you to enable delirium
Kaladesh Inventions Associated Sets: The Kaladesh Inventions are outstanding and a treat to look at in person
The only difference is you sacrifice an artifact rather than a creature, and the discount is based on the sacrificed artifact's mana value
The one issue with Superior Energy Retrieval is generally going to be having a substantial number of cards in your hand such that you are able to actually use multiple copies when you need to, but the existence of its Coin Bonus Ability to draw a handful of extra cards to find what you need and fill the hand to discard cards for Superior Energy Retrieval
I do think these nine other cards are going to have a small amount of demand going forward
