Laydala, Defender of Ulara

Flying
When Laydala, Defender of Ulara enters the battlefield it deals 3 damage to target creature or player.
{4}{t}: Reveal the top card of your library. If it is a land, Laydala deals 3 damage to you. If it's a creature, Laydala deals 3 damage to target player. When damage has been dealt, or the revealed card was neither, put it back on the top.