Kami of Lunacy

Four power in the air on one toughness is a body built to be spent rather than protected: it trades into almost anything, chump-blocks freely, and folds to the cheapest removal spell. That fragility is the entire arrangement, because dying is when the card pays. Soulshift 5 fires on death and reaches back to return a Spirit costing five or less from the yard, so the threat that fell hands you a replacement on the way out. The chosen number is the lever that matters here: at five the recursion digs deep into the Spirit curve instead of scraping back another one-drop, which positions this as a midgame node in a tribe built around chaining death triggers into fresh bodies. There is a cost to be honest about, though. Six mana is a real investment, and trading it into a two-mana removal spell is a meaningful tempo swing in the opponent's favor; what Soulshift buys back is the card, not the time. That is the bargain the design strikes: a fragile evasive beater normally becomes card-negative the instant it meets a kill spell, but this one leaves you even on cards no matter how it dies. The opponent spends a card to hand you a creature back, and a deck of stacked Spirit death triggers turns that into a grind it can win on attrition even while losing the race on the board.