The basic tools of the \glsentrylong{gm} must begin with with the obvious -- $4D6$ per player with multiple $D6$ colours so players can differentiate their Damage dice from their Action dice.
Next, of course, one character sheet and pencil for each of the players.
Since this can be a lethal game, especially for new players, consider adding a few `just in case' character sheets.
Remember pencils and a rubber, as players never bring their own.
Lastly, print out a load of character sheets.
This can be a lethal game, so players may need more than one.
They'll also need character sheets for any \glspl{npc} they bring into the game.