Invasion of Pyrulea // Gargantuan Slabhorn

The scry-three-and-dig front half does something sneaky with its own reveal clause: because every Siege is itself a double-faced card, any battle turned up counts as a hit, so in a deck thick with lands and double-faced cards the whiff rate runs lower than the raw odds suggest. That front side front-loads its payoff, filtering three cards and drawing before anyone has to decide how to break the Siege. And the Siege framing inverts the usual attack math: you name an opponent to protect it, then you and your other opponents spend attacks knocking it down, and once it falls the flipped side arrives cast for free rather than hardcast.

Flipped, the beast rewrites the rest of the board. Past its own trample and ward, it hands both to every other transformed permanent you control, welding a pile of defeated battles into a resilient attacking unit that shrugs off chump blocks and cheap removal. The anthem is deliberately narrow: it keys off the transformed state rather than a creature type, rewarding a shell built around flipping things instead of a generic beatdown pile. You need enough battles and double-faced cards resolved for the effect to bite, which is precisely the board the scry-and-dig front half was already assembling. The two halves are one engine wearing two faces: the front digs for the pieces the back wants, then hands them all a payoff once combat does the transforming.