Doric, Nature's Warden 3G
Vigilance
When Doric, Nature's Warden enters the battlefield, search your library for a Forest card, put it onto the battlefield tapped, then shuffle.
Whenever Doric attacks, you may pay 1G. If you do, transform her.

Doric, Owlbear Avenger
Vigilance, trample
When this creature transforms into Doric, Owlbear Avenger, other legendary creatures you control get +2/+2 and gain trample until end of turn.
At the beginning of your upkeep, transform Doric.

NOTE: Stock image, not actual card.