How Does All Will Be One Work with Battles
Whenever equipped creature deals combat damage to a player, draw a card, then you may cast a spell from your hand with mana value less than or equal to that damage without paying its mana cost
Oh, and did I mention that if you draw three cards, lose two cards, and have a Psychatog on the table, you've just grown your 'Tog by +6/+6 (two cards in graveyard + Fact or Fiction + 3 cards in hand -- discard the three cards to have six in the grave, remove all six to give another +3/+3)
Planewide Celebration Versatility is king, although Ive seen the proliferate mode on Planewide Celebration used more often than any other
Cards like Hades, Lord of the Underworld and Part of Your World bring characters from the discard pile back into the hand, while Mickey Mouse, Wayward Sorcerer can keep flooding the field with Magic Brooms