Sense of to exist, be present is attested from c.1300. Meaning to pay for as a treat is from 1821. Phrase stands to reason (1620) is from earlier stands (is constant) with reason. Phrase stand pat is originally from poker (1882); stand down in.
In Expert Mode, Wall of Flesh is seen to be significantly faster than his prior speed, posing map navigating harder as the players are demanded to plan out their routes fasters. In addition, getting pulled by his tongue will inflict additional damage to the player, possibly killing a weakened player.
Mana Wall is a Black Mage Job Ability that allows the user to take damage from MP instead of HP. In addition to this effect, it also reduces damage taken by half. The maximum duration of this effect is five minutes, though it is removed when the Black Mage's MP is reduced to zero. Its recast time is ten minutes.