Jace, Author of the Guildpact

Whenever Jace, Author of the Guildpact attacks or blocks, put a signet counter on it. As long as you control a permanent with a signet on it, instead put two signet counters on Jace, Author of the Guildpact instead.
{u}{1}{t}: Draw a card.
If Jace, Author of the Guildpact has seven or more signet counters on it, transform it.