Dusk Hound

When you discard Dusk Hound, you may pay {b}. If you do, manifest it.
{3}{b}: Flip Dusk Hound.
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Phantom Hound
Flying
At the beginning of your end step, if you have
seven or more cards in your graveyard, transform Phantom Hound.
Creature - Spirit Hound [3/3]