You try to fight Porky, but as a puny human you don't really stand a chance. He smashes you with all his might, crushing you.
You decide to try the fight again. Earlier you picked up a scroll of flame. And you got quite a high concentration skill.
You know that if you enhance your sword with flames, you might be able to deal damage to him. But there is also the risk that, if you don't keep concentrated, you might loose control of the flame, and it will pour down the Hilt, severly burning you in the process. Or the blade gets to hot and bend when hitting Porky's hard plate armour.
Now, this is a risk, but it's your option whatever you want to take it or not.
It's quite hard to decide now, whatever the risk out weights the rewards, since its all comes down to how it's balanced.
I never wanted to fight Porky, he's my friend...
Anyways, how do you expect this "concentration" to work? I mean, having quick time events or limited movement speed very much isn't going to make the gameplay more exciting.
Truly, I would absolutely adore watching flames dance around the blade of a sword and just admiring the glow it emits on the surrounding environment, but I want to have to work with what I have in RPGs. I hate how in Skyrim, you can literally carry as many weapons as you would ever need. In Sui Generis, that just wouldn't work. I think running around pulling forth a hay cart's worth of swords and shields, potions and poisons, a wide variety of fashionable helmets as well as, for some strange reason, some porcelain bowls you stole from the poor old man who runs the lumbermill. will make people pick up too much stuff.
You'd be able to carry two swords at most, and perhaps a second shield on your back. You would be a lot slower, but at least you'd have backup weapons in case anything goes wrong.
If Concentration were to be a character skill, then what would make that skill level up? Using a fire scroll and hoping the flames don't start raining on your head, giving you flashbacks of the volcanic eruption on Pompeii? Skill should mean everything in a game, rather than luck. If there are relatively simple ways of dealing with the possible danger of harming yourself in the use of scrolls like this one, then I'm all for it.
Just don't make me have to reload saves every 10 seconds because my lightning scroll backfired and my character now looks like Emperor Palpatine.
Possible scrolls:
Lightning: (Can be conducted through the enemy's weapon and armour, if both are made of iron.)
Fire: (Could set the handle of a spear or polearm on fire, as well as burn clothes, robes and cowls.)
Ice: (You hit an enemy on his sword arm and his joints become locked for a few seconds.)
Wind: (Every hit you parry causes the enemy's sword to launch the opposite way. Every body hit sends a wave of force through the enemy, pushing him back and staggering him)
Shadow/Light: (Blinds the enemy for a few seconds on hit)
Imagine being a notorious highwayman in a forest, and being attacked by a group of masked assailants, hired in revenge by a noble you robbed. You use your scroll of fire on your one handed sword, and as you evade his attack and slash horizontally at one of the men, he rolls out of the way. You hit his cape, and it catches fire. The assailant throws away his weapon and frantically attempts to put out the flames that are licking at him while you fight against the other attackers.