City Bus

Crew - {x}{2}
{t} Create a gas token
{4} Create a 1/1 student token
Crewed abilities (can use only if it’s crewed)
{t} and 2 gas tokens: deal 2 + {x} to any target
{2}{t} and 3 gas tokens: cast a lesson for free
Exile with 3 time counters on it, you get an
Emblem with get a gas on your upkeep, and
when this reenters the battlefield
Learn 3 times