When Elvish Harbinger enters the battlefield, you may search your library for an Elf card, reveal it, then shuffle and put that card on top. {T}: Add one mana of any color.
Near Mint - £7.10
Lightly Played - £6.10
Moderately Played - £5.00
Heavily Played - £3.60
Damaged - £2.20
Near Mint Non English - £7.10
Lightly Played Non English - £6.10
Moderately Played Non English - £5.00
Heavily Played Non English - £3.60
Damaged Non English - £2.20