Helena Walker, Survivor

Trample, Reach
Whenver a Dinosaur creature enters the battlefield under your control, you may pay {1}, if
you do, draw a card.

{u}{1}: Target Dinosaur creature can’t be blocked this turn.
{g}{r}: Dinosaur creatures you control have +2/+2 until the end of turn, activate only as a sorcery, you can only activate this ability once per turn.