There are various ways to use this effect, such as buffing a wide board of Snakes once each before crashing in, or buffing a single Snake, ideally your commander, up multiple times and attacking for lethal thanks to commander damage
you'll be able to play that card this turn
This will let players create infinite treasures for Magda to use for her ability , letting the player put any number of artifacts or dragons on the battlefield
If Polyraptor leaves the battlefield before its triggered ability resolves, most likely because it was dealt lethal damage, the token will still enter the battlefield as a copy of Polyraptor, using Polyraptor's copiable values from when it was last on the battlefield
Your opponent still gets a prize point if they're knocked out, but it's better them than the Charmeleon you're in the process of stacking Energy on