Galahad, the Worthy

When Galahad, the Worthy enters the
battlefield, if you control another Knight,
look at the top five cards of your library.
You may reveal a Knight, Aura, Equipment
or legendary artifact card from among them
and put it into your hand. Put the rest on the
bottom of your library in a random order.
Even here they were not without comfort,
for a vision of the Holy Graal sustained them.