Paradox Haze 

Enchantment — Aura
Enchant player At the beginning of enchanted player's first upkeep each turn, that player gets an additional upkeep step after this step.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL