Guardian of the Sylvan Wood

Vigilance
Guardian of the Sylvan Wood costs {2} less to
cast if you control an Elf.
Whenever you would draw a card, you may
instead tap X Elves you control. If you do, look
at the top X cards of your library. Put one card
from among them into your hand, and put the
rest onto the bottom of your library in a
random order.