✅ Mammon transfers to p1 at p1 phase start

Category	Ability
Status	Passing
Test	tests/test_abilities_complex.py::TestMammonTransferControl::test_mammon_transfers_to_p1_at_p1_phase_start

P2 owns Mammon. P1's main phase starts — Mammon transfers to P1.

Preconditions

• P2 owns Mammon (#053) in lane 0, READIED.

• P1's main phase is starting.

Action

• Fire MAIN_PHASE_START with side=P1.

Expected Postconditions

• Mammon.owner = P1 (was P2)

Assertions

assert mammon_after.owner == Side.PLAYER_1