Kyriel, Herald of Bounty

Kyriel, Herald of Bounty gets +1/+1 for each
basic land type among lands you control.
Whenever Kyriel attacks, you may search your
library for a basic land card, reveal it, and put it
into your hand. If you do, shuffle your library.
{w}{u}{b}{r}{g}: Discard your hand. You gain X life
and draw X cards, where X is the number of
cards discarded this way.