Consumable Powers Idea?

[Demetri Malius]

Alright so I have been pondering this for the past few weeks, but I kinda want to see if we can make a move to create consumables that allow temporary powers. Originally I was just like meh, but Trixie's daring innovation has helped me announce it. Now one thing I would need help with is balancing, but this is generally how it goes.

Solid Rules: (Unless overturned)

All of these are consumables, meaning that each separate power consumable takes up one consumable slot. Same power consumables stack up to 3,5(?) times.

There are two separate doses, one that's for a round, and one that is for a full fight(3 rounds). DIFFERENT DOSES DO NOT STACK

Costs are as follows: (THIS IS SUBJECT TO CHANGE BASED ON THE COMMUNITY RESPONSE):
Single round dose: 10% of power cost.
Full fight (3 round) dose: 25% of power cost.

EXAMPLE: Stealth (1200)
Single round: 120 OM
Full fight(3 round) dose: 300 OM

NOTE: Once taken, powers can either last 2 or 6 hours(depending on dose) for use for story actions, or for the times listed above. For fights, the consumable must be taken IMMEDIATELY before it, BUT it can also be taken DURING a fight. If taken during a fight, the amount used is subtracted from the hours that. (Example. Took Full Fight Stealth dose for 2 rounds, the remaining time the character has left with the power is 2 hours for story purposes, or one round if attacked IMMEDIATELY afterwards.) IF YOU ARE ATTACKED WHILE USING IT FOR STORY PURPOSES, IT ONLY ACCOUNTS FOR HALF ITS DOSE DURING THE FIGHT.

You may only have ONE consumable power up active at a time. HOWEVER, you can stack the effects of same power consumables.(example, taking 3 single round stealth consumables)

Possible exception to above rule: This takes Trixie's idea into account. If you wish, for you can expend 1 sp in addition to any power up to use up to 3 different  power consumables, SO LONG AS THEY ARE ALREADY ON HAND. No buying it all in the middle of a battle!

POSSIBLE BANNED POWERS: Powers that might be too OP as a consumable. Mimic is most likely one, but this I am leaving up to the community. Think about how it would play out in your fights, and how fair it is. Please don't try to make an advantageous system, especially if we want this to become an actual thing.

WHAT I AM SEEKING: Basically critique on what rules are good or bad, possible loopholes, possible new rules, as well as CRITIQUE ON COST. Would you buy these items? Glances at all the things people don't buy in the item page.

EDIT: Also some ideas to how these items will look IC would be nice. :frogbon:

Extra rules may be added to this post. Updates will be listed first before the rest of the original post. THis is a starting idea, and may or may not be even implemented. Please keep all critique professional and keep an open mind.