{Fabled Hero} attacks
During declare attackers {Mortal's Ardor} then {Fall of the Hammer} the only potential blocker
2/2 becomes a 4/4, then a 5/5 from hammer triggering heroic
5 to the creature, 5 to the player, 5 more to the player
Your 2/2 at the beginning of combat caused 10 points of damage to your opponent, killed a creature and gained you 15 life all for {1}{W}{R}
Lifelink op?