World at War causes creatures to become untapped at the beginning of combats generate by other cards


[[World at War]] causes creatures to become untapped at the beginning of combats generate by other cards. In the above case, the caster had passed their first combat main phase, played [[Seize the Day]] on an earlier main phase, targeting an untapped creature, and then played World at War on the main phase, which did not generate an extra combat phase, but it did trigger the delayed trigger from World at War to untap all creatures that attacked this turn, despite the new combat phase not being generated by World at War.