spring-loaded sawblades in flash, copied by the Myriad Pools on a treasure artifact
I have the “wellbeing well" in play, transformed into Myriad Pool and casted "spring-loaded sawblades” in flash against an 8/8 creature.
I chose a treasure token as the temporary copy.
Two weird things happened.
1) The treasure token became a simple token without any ability and I did not have the opportunity to copy the “5 damage trigger” which is normal as I did not really “cast” the spell so it did not really enter the batteflied.
2) But the real bug is more the impossibility to use the "create with artifact” ability on the copy, to transform it for the 4 mana to make a blade wheel chariot.
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[Deleted User] commented
1) The permanent that becomes a copy did not enter the battlefield, it merely changed its characteristics, so no ETB trigger.
2) "Craft only as a sorcery." So not possible in combat or during your opponent's turn.