Ive stuffed in just about all the library manipulation I can, mostly as a way to find our story chapters, particularly Final Iteration
A well-placed machine can function like a compact specialty store in locations where a full retail footprint would not make commercial sense
When I was a kid I really liked the stars Holofoil but as I got older the holofoil on them started to scratch REALLY easy so I really prefer Cosmo Foil now
I cant not be biased about a Magic: The Gathering deck featuring the most important game from my childhood
If a creature that's no longer on the battlefield is instructed to explore, it can, as long as the spell or ability doing that resolves
Similarly, if you sacrifice a creature to activate a mana ability while activating Heirloom Epic's ability, that creature won't be on the battlefield when you pay the ability's activation cost, so you won't be able to tap that creature rather than pay one of the mana in the activation cost