When you have too many cards in your hand, make use of spare Event cards such as "OP11-060 Let's Crash This Wedding!!!" by trashing them for Nami's [On Your Opponent's Attack] effect, similar to a Counter, allowing you to keep your hand size below 7 to activate your Leader effect
Whether it is the right tool for you, in a deck you build or in a game, is largely going to be a function of what is useful for you at the time
As far as Moxen are concerned, though, this card is very narrow
Trapped within its wordy rules text is a simple idea: you enchant a dead creature from your graveyard, bringing it back to life (with slightly worse hand-eye coordination) to do your bidding
Pricing and Investment Tezzeret holds a steady price of $25 to $30
Purphoros might be more Bracket 3 speed, so opting for an Impact Tremors instead might slow your roll a little