Tahlia, the Devoted

Haste, Vigilance
Tahlia, the Devoted enters the battlefield under
the control of an opponent of your choice.
She attacks each combat if able. She can't block.
Whenever Tahlia, the Devoted deals damage to
a player, that player draws a card.
If Tahlia, the Devoted becomes tapped, target
player discards a card.
They've promised that dreams will come true - but
forgot to mention that nightmares are dreams, too.