Fatestitcher, Pemmins aura, infinite mana

[Offler]

I unearthed Fatestitcher and enchanted it with Pemmins Aura. I have infinite colorless mana - lets say 100.

How exactly shall i use the infinite colorless mana when i want to attack with fatestitcher, and pump it with mana to have power 100 and actually deal damage (no matter if to opponent or creature)?

Same question as with Morphling. When the creature dies if its toughtness is lower than 1?

[Maveric78f]

You can't. It's put into the graveyard (rfg is the case of unearthed Fatestitcher) as soon as it has 0 toughness before any player receives priority (as a state-based effect)

[Offler]

so if pumping Morphling or random creature with Pemmins aura the real limit is in its toughtness, which has to be at least 1.

What if i try to make Fatestitcher to be better blocker - lets say to make it x/102 and then to pump it up? This will surely not to kil him, but i think he will not be considered as 0/102 but as -99/102 so increasing its toughtness will not stop decreasing his power below zero...

Well at least if he was not unearthed i can turn him into quite large wall.

[Nihil Credo]

What if i try to make Fatestitcher to be better blocker - lets say to make it x/102 and then to pump it up? This will surely not to kil him, but i think he will not be considered as 0/102 but as -99/102 so increasing its toughtness will not stop decreasing his power below zero...

Yes. The game does keep track of negative power (and life totals), it's just treated as zero for all intents and purposes.