Pre-warp Gathering

Warp 7 — {7} (Rather than cast this card from your
hand, you may pay {7} and exile it with 7 warp
counters on it. At the beginning of your upkeep,
remove a warp counter. When the last is removed,
conjure 3 Grey Saucers onto the battlefield. Put this
card into your graveyard.)
Return all cards with Warp from your graveyard
into your hand. The next time you cast a spell
for its warp cost, you may cast it without paying
its mana cost.