Gishath's Enduring Call

(You may cast a legendary sorcery only if you
control a legendary creature or planeswalker.)

Reveal the top X cards of your library. Put any
number of Dinosaur creature cards onto the
battlefield with mana value X or less and the rest on
the bottom in any order. If X is 10 or more, those
creatures gain haste and trample until end of turn. Exile Gishath's Enduring Call.