There’s one part that’s not entirely clear to me, however. You state that “[these abilities are] taken into…

We received a rules question this week asking about damage-reducing constant abilities, and came to a new conclusion for Boarding Party and Magnetic Bubble. Damage-reducing constant abilities (like on Titanium Exoskeleton) have a higher timing priority than interrupt abilities that reduce or redirect damage taken; so when a character is dealt damage, any constant abilities that affect the damage they take are calculated first, then interrupt abilities that affect the damage they take are calculated after. We want Boarding Party to be treated the same, as a damage-reducing constant ability that is taken into account before any interrupts to dealt damage. To restate, if Boarding Party is in play in a 1-player game, Magneto can sustain 6 damage max; if he’s sustained 5, then is dealt damage, Boarding Party makes it so he can only take 1, and then that 1 damage is placed on Magnetic Bubble.

I apologize for the confusion. I intended to say “Boarding Party is a damage-reducing constant ability that is taken into account before any interrupts to taken damage.” Once damage is dealt, then the damage taken is determined first by constant abilities affecting damage taken, then interrupts affecting damage taken. Does that make sense?

[Reversed by ruling 205]