Days of Futures Past

Create 3 6/6 Sentinel Colorless Artifact Creature Tokens with, Flying, First Strike, and Trample. {2}{r}{t}Deal 2 damage to any target.
If you control a Bastion- Planeswalker, create 6
of those tokens instead.
Take an extra turn after this one.
Flashback {2}{c}{u}{b}{r} (You may cast this card from
your graveyard for its Flashback cost. Then exile it.)