As a Legendary, it's not too easy to find, and TCGPlayer lists the current market value for Sisu: Divine Water Dragon at $31.96
This way to chain spells in between turns and dig for cheap resources like Lotus Petal was the main reason why it was eventually banned in Pauper, despite not being dominant at the time it happened
One of the most explosive tribal commanders available Voja attacks and immediately pumps the whole board while drawing multiple cards
Frasier adds that they have a lovely bromance occurring throughout the set, and Casey is the only person/card to make Raphael seem reasonable by comparison
There has been a slight pullback this week, with near-mint copies settling closer to $13, but demand remains strong
The cost would be the combined cost of both halves, they would be put on the stack as a single spell and would resolve starting with the left half (which usually made the right half work better anyways)