Resources

Magic: The Gathering Oracle Changes

Planar Chaos to Future Sight (Single Change View)

Changes involving "cumulative upkeep"

Old card (Planar Chaos) New card (Future Sight)

Mesmeric Trance

{1}{U}{U}

Enchantment

Cumulative upkeep {1}

{U}, Discard a card: Draw a card.

Mesmeric Trance

{1}{U}{U}

Enchantment

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

{U}, Discard a card: Draw a card.