You may cast a card from that sideboard without paying its mana cost
If your deck is focused on this, some amount of milling to power them up can also be reasonable
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At any rate, we're paying Wurmcoil Engine mana for this Antiquities clunker, and it does nothing at first
There are a few stray cards in the precon deck with Sacrifice synergies such as Chittering Witch and Piper of the Swarm that just dont feel like theyre hanging in the right gothic group
Bounce Lands (not to be Confused with Bouncelands) You can only fit so many lands into a deck and still have an interactive deck