I like the idea of Paranirvana and nirvana as it pertains to the ability to heal beyond their normal maximal health - this was a realyl creative idea and seems feasible without being OP. The ability of immaterial creatures to generate light though seems uncalled for. Immaterial creature - most notably phase dragon and immortal are already used extensively in aether decks and are quite powerful. They do not require an additional boost through this skill. It would be unbalance because light based cards should primarily benefit light decks rather than aether decks and there are no immaterial creatures within light. Finally if we consider an aether deck using phase shields and immaterial creatures with the ability to cast miracle (provided from light generation of their creatures) - they would be unstoppable.
With Lapse - another good and interesting idea that suits the time mark. However the generation of 3 quanta is too much - being able to duplicate cards and hence effectively have more than 6 copies of a particular card is already quite powerful and does not require this.
Ablution - yet another interesting idea. and once again I am going to agree with the first component - the healing bit, but not about the purify being used to evade targeting. What could instead be done in the upped card to make it more applicable to water creatures in particular is: All water creates now enter with purify (If nirvana card is not approved)