When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with converted mana cost X or less from among them onto the battlefield. Then shuffle the rest into your library.
Genesis Hydra enters the battlefield with X +1/+1 counters on it.
Near Mint - $0.20
Lightly Played - $0.10
Played - $0.10
Heavily Played - $0.10
Damaged - $0.10
Near Mint Non-English - $0.20
Lightly Played Non-English - $0.10
Played Non-English - $0.10
Heavily Played Non-English - $0.10
Damaged Non-English - $0.10