Say you have a character that uses Everlasting Moment from the Cryokinesis Psychic discipline. Their potential gets them a 180 potential, which is a 120 Resistance check, but if they maintain the power it goes up a degree because of amplify sustained power, so making it a 140 Resistance check.

Does that make the person defending against it have to make another resistance check, or do they still wait 5 rounds to make a new resistance check. Or do you just start with the higher resistance check?

A good question. Let's do a quick rundown.

"Repeating Resistance Checks: If a person is affected by a supernatural ability in combat that obligates him to repeat a Resistance Check, these Checks are made at the beginning of the Combat Turn, before any other combatant can act – no matter how quick they might be" -English Core, pg. 93.

"Every 5 Turns: Characters subject to a supernatural effect as a consequence of failing an MR Check are entitled to a new roll every 5 turns unless the spell indicates otherwise. For instance, someone affected by a Paralyze spell would not be able to move for the following five turns, but he would get a new roll in the sixth, later at the eleventh, etc. Only maintained spells allow characters to roll for a new Resistance. Spells that produce a sustained effect after failing the Check (and do not require maintenance, as is the case of Destroy Memories) do not grant new rolls. This rule applies only to effects resistible by MR and does not include any other type of Resistances " English Core, pg. 115

"Change in Magic Resistance: As an exception to the previous rule, all characters are entitled to a new MR Check if their Magic Resistance is temporarily increased by way of a supernatural effect. This is to say, someone affected by a Paralyze spell effect may repeat the MR if an Increase Resistance spell is cast upon him. There will be only one Check per supernatural effect. A character in possession of a magic ring that applies a bonus to MR will not be allowed to put it on and take it off over and over in order to repeat the Check every turn until he passes it. No matter how many times puts it on, he will be allowed a new MR Check the first time only " English Core, pg. 115.

Now, given that I've never actually seen rules discussing the other resistances in anything but a passing manner, this means you've got one of a few options, depending on your GM.

1. You take this as law, and you only make the check once. Pass or fail, that's life.

2. You ignore the line about this all only applying to Magic Resistance, and you reroll failed checks every 5 turns until you pass.

3. You ignore the line about this all only applying to Magic Resistance, and you reroll resistance checks every 5 turns regardless.

4. You take the second section as applying to all resistances, and the change in difficulty causes a second check, but only a second check. Not multiple checks every time.

5. You ignore both sections, and allow resistance checks at every change to the difficulty, to the person's Resistances, and every 5 turns.

6. You never roll resistances ever, because your GM disallows mages, psychics, and all Ki effects which might produce such things.

7. ???

8. PROFIT!

So, in short, ask your GM, because I've yet to find anything official on PsR stuff.

I'd go with 120 for the first round, and then 140 every 5 rounds after that.

And wave this as : "It's getting even colder than when cast"