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Rulings
To determine how many additional +1/+1 counters a creature enters the battlefield with, use Arwen, Weaver of Hope's toughness as that creature is entering the battlefield.
If Arwen, Weaver of Hope and another creature you control enter the battlefield at the same time, Arwen's ability won't cause that creature to enter with additional +1/+1 counters on it.
If Arwen, Weaver of Hope and another creature you control enter the battlefield at the same time, Arwen's ability won't cause that creature to enter with additional +1/+1 counters on it.
Rulings
To determine how many additional +1/+1 counters a creature enters the battlefield with, use Arwen, Weaver of Hope's toughness as that creature is entering the battlefield.
If Arwen, Weaver of Hope and another creature you control enter the battlefield at the same time, Arwen's ability won't cause that creature to enter with additional +1/+1 counters on it.
If Arwen, Weaver of Hope and another creature you control enter the battlefield at the same time, Arwen's ability won't cause that creature to enter with additional +1/+1 counters on it.
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