If a player misses The Arena's Greatest trigger at the start of their turn 1 and realizes it after drawing and playing a card, should they get the point?

Ruling: The player does not get the point. The Arena's Greatest is a triggered ability, and once the player has moved past the beginning phase and played cards, it is too late to correct under tournament rules. This falls under missed trigger rules (702.2), not the "forgot to score" correction rule (702.3), because 702.3.a explicitly excludes points scored from card triggers.

Sequence:

• The trigger must be announced during the beginning phase
• Once the player draws cards and plays a unit, they have moved past the window where the trigger would affect the game
• At this point, the trigger is considered missed and cannot be retroactively applied

Nuances:

• The opponent is not required to remind the player about the trigger (506.2)
• The opponent does NOT receive a Failure to Maintain Game State warning for not calling attention to the missed trigger, as players are never required to track their opponent's triggers
• If The Arena's Greatest is controlled by a player (e.g., they have a unit there), the controller is responsible for the trigger per 181.6.a, but 506.1.a (tournament rules) takes precedence, making the player who triggers it (turn player) responsible
• In high OPL play, players are expected to take every advantage they can, though not reminding an opponent of a missed beneficial trigger may feel unsporting