Axis of Mortality

If a player can’t gain life, that player can’t exchange life totals with a player with a higher life total. If a player can’t lose life, that player can’t exchange life totals with a player with a lower life total. In either of these cases, neither player’s life total will change.

If one of the targeted players is an illegal target when the triggered ability of Axis of Mortality tries to resolve, the exchange won’t happen. Neither player’s life total will change.

When the life totals are exchanged, each player gains or loses the amount of life necessary to equal the other player’s previous life total. For example, if player A has 5 life and player B has 3 life before the exchange, player A will lose 2 life and player B will gain 2 life. Replacement effects may modify these gains and losses, and triggered abilities may trigger on them.