Custom Spell[]
The custom spell of "Dimensional Escape from Great Peril!" (at least, that's what I want to call it) could work out to be the following:
- Summonation 8 T (♠)
- Momentary Duration 1 T (Instantly teleports)
- Spell involves few elements 2 T (spell needs to be bound to an extradimensional site)
- Spell Range in another dimension 6 T (spell is targeted to an extradimensional site)
- One Subject Affected 1 T
- Subject is (potentially) another Wizard 3 T (in case you have to cast it on yourself)
- Subject is very well known 1 T (don't try to cast it on strangers!)
- Total energy requirement = 22 T
- Custom Spell requirement = 11 T (All elements used, and cost is halved)
Since you have an Excellent Sorcery, which compensates for 10 T, all you need is one more Thaum to cast the spell, making it perfect for casting as a Custom Spell instantaneously, since even unaligned power gives at least 1 Thaum.