Enchantment When Out of Time enters the battlefield, untap all creatures, then those creatures phase out until Out of Time leaves the battlefield
For my first colorless deck, I built a $32.25 (sorta, I split up and gave that price to both lands and non-lands) Voltron deck around Traxos which you can find here - Budget Commander #69 - Colorless Voltron with Traxos
If you're just playing it as honestly as possible, you'll still probably pull ahead with your extra land drops and card draw
As long as this creature is attacking, creatures can't block unless their controller pays for each of those creatures
Promo cards Only one promotional card has been revealed, the buy-a-box promo card Vorpal Sword
Firebending Student I gushed about Tifa Lockhart in Final Fantasy , and Im getting similar vibes from Firebending Student