You can also go back and forth between different versions to see how much the deck has improved (or hasnt)
A sets print run, while not being precisely calculable, naturally ties in with a sets rarity a couple different ways
Krenko, Tin Street Kingpin is a token generator that, like Delina, Wild Mage, needs to jump into the fray to get you the tokens
Legendary Creature - Dragon Avatar Niv-Mizzet, Guildpact Flying, hexproof from multicolored Whenever Niv-Mizzet deals combat damage to a player, it deals X damage to any target, target player draws X cards, and you gain X life, where X is the number of different color pairs among permanents you control that are exactly two colors
You can also do this with artifact creatures using Argent Mutation and similar cards
You need to recast them, but that can be a boon for cards with cast triggers like Emrakul, the Promised End