Magic: The Gathering Comprehensive Rules Changes - Time Spiral to Planar Chaos

Old rule (Time Spiral)	New rule (Planar Chaos)
505.3. [Click to view all changes.]
505.3. Because every split card consists of two halves with different colored mana symbols in their mana costs, each split card is a multicolored card while it's not a spell on the stack. While it's a spell on the stack, it's only the color or colors of the half being played.	505.3. Each split card that consists of two halves with different colored mana symbols in their mana costs is a multicolored card while it's not a spell on the stack. While it's a spell on the stack, it's only the color or colors of the half being played.

Old rule (Time Spiral)

New rule (Planar Chaos)

505.3.

Because every split card consists of two halves with different colored mana symbols in their mana costs, each split card is a multicolored card while it's not a spell on the stack. While it's a spell on the stack, it's only the color or colors of the half being played.

505.3.

Each split card that consists of two halves with different colored mana symbols in their mana costs is a multicolored card while it's not a spell on the stack. While it's a spell on the stack, it's only the color or colors of the half being played.