No, Spellbinding Circle is not currently banned in the official Yu-Gi-Oh! TCG banlist. It is allowed at 3 copies in a deck.
yes
Spellbinding circle isn't worth as much as it used to be; common and rare are about a dollar each, ultra unlimited is worth about $5 USD, and ultra 1st edition is worth about $12 USD.
Yes, it may target face-down monsters.
You can activate a trap card whenever you like. Spellbinding Circle, if chained to an attacking action and targetting the attacking monster, will also stop said attack from occurring by its effect; there are exceptions for certain card effects causing an automatic attack or change of battle-phase, for example, and for which the Circle will not prevent happening.
No it is a Continuous Trap Card that prevents your opponent from attacking and/or changing battle positions.
buy many packs and get lucky. you might want to look up the set it is in so you can you the right set.
The mystery writer has written another best-selling, spellbinding novel.
Yes Spellbinding is one word which means to Hold the complete attention of (someone) as though by magic; fascinate.
Fox has a spellbinding tale of suspense and survival.
To hold under or as if under a spell; enchant or fascinate.
He found the imagery contained in the novel quite spellbinding
I watched it and it was my favorite anime. It was not just awesome it was wonderful, spectacular, spellbinding and fantastic.