Protection from modified creatures (Modified creatures have a power, toughness, or ability different than their printed versions.)
At the beginning of each player's end step, you may put a +1/+1 counter on target creature that player controls.
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A face-down permanent’s “printed” power and toughness are 2. It has no abilities.
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A token’s “printed” abilities, power, and toughness are the values it was created with.
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If an effect only defined a * or ? symbol in a creature’s power or toughness, it isn’t modified.
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A creature isn’t modified if its controller, color, or types have been changed.
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A creature is modified if its text has been changed to modify its abilities, if it has gained or lost any abilities, or if a counter or an effect has set or changed its power or toughness.
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Certain kinds of cards (such as flip cards, adventurer cards, and double-, triple-, and four-faced cards) define alternative characteristics for those objects under certain circumstances. Using these alternative characteristics doesn’t count as being modified.
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Most copy effects will cause a creature to be modified, although in some unusual cases the copy effect will leave it with the same power, toughness, and abilities. For example, a Runeclaw Bear that becomes a copy of Glory Seeker will, oddly enough, not be modified.
