Activating the last ability of Guardian Idol while it's already a creature will override any effects that set its power or toughness to a specific value. Effects that modify power or toughness without setting them to a specific value will continue to apply.
17-11-2017
wotc
If Guardian Idol has any +1/+1 counters on it, those counters will remain on it after it stops being a creature. Those counters will have no effect as long as Guardian Idol isn't a creature, but they will apply again if it later becomes a creature.
01-08-2008
wotc
A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
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: Guardian Idol becomes a 2/2 Golem artifact creature until end of turn.
Igor Kieryluk2017-11-17
