Portal to the Past

When this Card Enters play, and after your Draw
Step,Add a Phase Counter and Resolve the Effect.
I - Create a 0/1 Gem Artifact Token that Says:
"{t}:Add 1 Mana of any Colour to your Mana Pool."
II - Target Opponent Returns a Card from his
Graveyard to its Hand. You return Two Cards.
III - Take an Extra Turn after this One,
Remove Portal to the Past from The Game.
Objection overruled