The main strategy of the Havencraft class is to play Countdown amulets which summon followers a few turns after they're played. This gives the player the power to overwhelm the opponent by the middle of a match.
In the beginning of the match, the class plays amulets and followers that grow stronger during the opponent's turn. In the middle of the match, the amulets' Countdown numbers drop to zero, summoning formidable followers and effects at no additional costs.
The Havencraft class is represented by Eris.