mtg cards like sol ring Fae Portal Proxy | Custom Fantasy Artifact Proxy Marvel Super Heroes Commander Sol Ring Artifact Sol Ring | Marvel Super

Most of the products in the Avatar: The Last Airbender set are in stock at the time of writing, and some of them are available for massive discounts, including the Collector Booster Box, Play Booster Box and Jumpstart Booster Box

Let's assume they're dying for a good cause

I guess the closest analogue to it might be the Commander products that have cards legal in Legacy without disrupting Standard

Hail, Caesar includes 37 never-before-seen Magic cards

While its often overlooked, dont forget that Skullclamp also gives +1 Power, allowing you to sacrifice creatures with more power while still getting extra card draw