Myth Unbound

Text:

Your commander costs less to cast for each time it's been cast from the command zone this game.
Whenever your commander is put into the command zone from anywhere, draw a card.

Rulings:

• 7/13/2018 Myth Unbound’s cost reduction applies after you apply the commander tax. In effect, this reduces the commander tax to <img src="/Handlers/Image.ashx?size=small&amp;name=1&amp;type=symbol" alt="1" align="absbottom" />.
• 7/13/2018 Myth Unbound’s cost reduction applies even if you’re casting your commander from a zone other than the command zone.
• 7/13/2018 If Myth Unbound leaves the battlefield at the same time as your commander is put into the command zone, its last ability won’t trigger.
• 12/7/2018 If another player is somehow able to cast your commander, Myth Unbound’s first ability applies to that player’s spell.