Pour ceux qui ne l'aurait pas lu, pour les prochains drafts :
So, prior to Planar Chaos, if you had a token leave play and return without a chance to check for state-based effects (as happens with Momentary Blink), the token would actually come back into play. The wacky thing is, there is a game rule about tokens not being able to return to play after being removed. The problem was that it checked as a state-based effect. Starting with the Planar Chaos rules update effective February 1st, that rule has been specifically reworded to work correctly. Now, if you cause a token to leave play, it won't come back. So you can't cast Momentary Blink on your token and keep the token, and you also can't make a token copy of Flickering Spirit and use its ability without losing the token. (The token copy of Flickering Spirit will disappear while flickered out and then not come back.)