Jace, The Time Genius

Medal with Time {6}{u}{b} - Untap all permanents
and take an extra turn by paying the Medal with Time
cost.
When you have two turns in a row, create four
3/3 Jace Copies creature tokens with Flying and
"If this creature become the target of a spell or ability, sacrifice it. If a spell or ability targets a
Jace, change the target to a Jace Copy."