A maximum of 20 proxies, and you can only proxy cards that are worth 50 euros and up + duals and forces. This should enable everyone to construct a T1 deck and play! This is in a store, so you can still buy cards that you need.
This sounds rather interesting, but exactly what cards are you valuing at over fifty euros? It should be self explanatory to those who understand price levels (I don't know euro-to-dollar exchange, offhand), but wouldn't it just be better to have a predetermined list?
I forgot to post it here. Prize reference is
www.nedermagic.nl. So yes, you can proxy Chains of Mephistopheles and Old man of the sea. No you can't proxy reset. the shop is a little high priced for some cards, but we had to take a reference somewhere. Anyway, I promise you won't be excluded if the card happens to be $45 or something. The primary objective is to let people know what T1 is, and for us it's to learn and have fun.
Edit: I got a list from the shop: Black Lotus, alle Moxes, Time Walk, Time Twister, Ancestral Recall, Berserk, Ali from Cairo, Bazaar of Baghdad, Guardian Beast, Juzam Djinn, Library of Alexandria, Mana Drain, Mirror Universe, Mishra's Workshop and Candelabra of Tawnos can be proxied as > $50 cards.