Equip 5
Every time a creature attacks, it gets +1/+0 for that turn, and every time you play a land, you get another attack
This is only relevant in a couple of archetypes so it comes down to what you are doing as to what you want the power to do
Realistically, the player just before you in the rotation will get the most mana out of this, so if this gets blasted before coming back to you every player but you will have gotten more out of this than you, and this is something you risk pretty much every turn cycle
On the turn in which the new Johann enters the battlefield, you may use its casting permission once, even if you used the old Johann's casting permission to cast an instant or sorcery spell from the top of your library in that same turn
The juiciest section of this batch of MTG Final Fantasy leaks is definitely the Choose a Job cards