Whenever Tyrannosaurus Rex attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.
Near Mint - £22.50
Lightly Played - £19.20
Moderately Played - £15.80
Heavily Played - £11.30
Damaged - £6.80
Near Mint Non English - £22.50
Lightly Played Non English - £19.20
Moderately Played Non English - £15.80
Heavily Played Non English - £11.30
Damaged Non English - £6.80