You must discard cards (if you have more than the maximum hand size) during your cleanup step, not during your end step
Remember that you should always be respectful of your opponents time when searching their library, especially if youre playing a casual game
It lets you sacrifice your cheaper creatures later to tutor more bombs and necessary cards
The enablers wont work if you cut too many dredge cards and vice versa, but also the deck wont be able to win if you dont have enough payoff to mill into
Thats an outrageous bit of value attached to one of your characters and it also protects you against the classic one-two punch of the meta defining ruby-amethyst control deck of set two, which would wipe your board with Be Prepared and then answer the first character you play with a Lady Tremaine which would force you to sacrifice it
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