Snakeform

[The Grim Reaper]

Card:

Snakeform
Instant
Target creature loses all abilities and becomes a 1/1 green Snake until end of turn.
Draw a card.

Rulings:

10/1/2009 The power/toughness-setting effect overwrites other effects that set power and toughness only if those effects existed before this spell resolved. It will not overwrite effects that modify power or toughness (whether from a static ability, counters, or a resolved spell or ability), nor will it overwrite effects that set power and toughness which come into existence after this spell resolves. Effects that switch the creature's power and toughness are always applied after any other power or toughness changing effects, including this one, regardless of the order in which they are created.

Question:

If I cast Snakeform on a Nantuko Shade and my opponent responds by pumping it to a 10/9, will it become a 1/1 after Snakeform resolves? If not, why?

Thank you.

[heroicraptor]

612.3b Layer 7b: Effects that set power and/or toughness to a specific number or value are applied.

612.3c Layer 7c: Effects that modify power and/or toughness (but don’t set power and/or toughness to a specific number or value) are applied.

Nantuko Shade will be a 9/9 after Snakeform resolves.