Game 3 Hearthstone World Championship
These two players both played druid this game, where both players almost had full hands before the game ended. This was due to the reluctance to play minions in the early / mid game in fear of removal spells which would render the card useless. Both also drafted Yogg-Saron in their decks, which meant both had extremely late game decks. Pavel noticed this trend and switched to a more agro style of play, where he forced DrHippi to play removal spells which restricted his board presence.
This allowed Pavel to play more and more aggressively, and later won through the insane amount of spell damage burst from his hand. The great observation from Pavel was the greatest factor to his win, and distinguishes the good players from the best.