The only reasons it isn't higher are because it requires a costly six mana each turn to pull off, eating into resources you could be spending winning, and because needing two colours in your colour identity limits the decks it could fit into
Tortured Existence Tortured Existence mainly sees play in Pauper and graveyard-based EDH decks
I need to think about this build-around
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a Cat you control may become lethal if Feline Sovereign leaves the battlefield during that turn
Some of their best enforcers and contract mages come from strivers, kids out of the Caldaia and Mezzio who hustle to get themselves into the family and keep that drive with them to advance up the Brokers's ranks
Then, if you have a creature enter the battlefield from the graveyard, Kotis gets two +1/+1 counters