Yefa'Rox, Primal Chaos

Deathtouch
When Yefa'Rox, Primal Chaos enters the
battlefield, each player discards half the cards in
their hand at random, rounded up. You draw a
card for each non-land card your opponents have
discarded this way.
{4}{b/r}{b/r}{b/r}: Return Yefa'Rox from your
graveyard to the battlefield. Activate this ability
only if opponents have 10 or more cards in hand.