Rylys, Headmaster of Skulldeep

Flash, crystalcraft 2
Shard tokens that enter the battlefield lose
shroud until the next end step.
{3}{u}{u}{u}{r}{r}{r}{t}: Sacrifice any number of
target shard tokens you control, then you may
draw that many cards. You may reveal up to
three cards with crystalcraft in your hand and
cast them without paying their mana costs.
Until the next end step, Shard tokens lose shroud.