When Niv-Mizzet Reborn enters the battlefield, reveal the top ten cards of your library. For each color pair, choose a card that's exactly those colors from among them. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.
NM-Mint Foil - $11.20
Lightly Played Foil - $10.60
Moderately Played Foil - $10.10
Heavily Played Foil - $8.90
Damaged Foil - $7.30
NM-Mint Foil Non English - $11.20
Lightly Played Foil Non English - $10.60
Moderately Played Foil Non English - $10.10
Heavily Played Foil Non English - $8.90
Damaged Foil Non English - $7.30