Anomalocaris, First Apex

Islandwalk, Menace, First strike
When Anomalocaris enters the battlefield, all
creatures without the Cambrian creature type
become 1/1 Trilobite creature tokens with no
abilities and gain the Cambrian creature type. All creatures other than anomalocaris with a power or toughness greater then 3 now have a power and toughness of 3
{u}{u}: Anomalocaris gains protection from the
trilobite creature type until the end of this turn