Put target attacking or blocking creature on top of its owners library
Ishgard, the Holy See is always worth including in a white deck, even with only a couple of available targets for the spell, but it gets more desirable the more invested you are in artifacts and/or enchantments
It has indestructible, you'll gain protection for the round if you cast it, even from exile works, and then you can tap it to toss a burden counter, draw that many cards, and in your upkeep you'll lose burden counter life
While these products could have some decent value, theyre not going to help bring down Collector Booster prices
Magic: The Gathering is an intimidating game, even if youre a seasoned player like myself
If you own a card fits this description, you may want to sell it before the hammer comes down