Choose a creature in play and remove it from game.
It's controller repeats the process.
Continue this until, someone decides not to choose a creature.
For each creature that is removed this way. Each player may pay life equal to that creatures mana cost and return their creature into play. Put all other creatures removed this way into their owner's graveyard.
Starting the turn after Turn of Events comes into play, all phases in each players turn are reversed (The phase order becomes discard, main, attack, main, draw, upkeep, untap.)
If Turn of Events would be put into a graveyard from play, return it to it's owners hand.
Whenever enchanted creature deals combat damage to another creature. During that players next untap step. That creature becomes a zombie as well as it's other types.
Put a walking dead counter on it. Whenever a creature witha walking dead counter
deals comabt damage to another creature. During it's controllers untap step. It becomes a zombie as well as it's other types. Put a walking dead counter on it.