Based on the wording it seems like the additional cost for this card does not apply when using "put into play" effects. For Solo players you probably would only use this card via Make the Call Call for Backup etc.... to bypass the confuse status. For multiplayer games the confuse status really isn't a problem as long as you aren't the dedicated thwarter. The total stats here make Gilgamesh better than most hero cards in terms of total damage/resource and on par with Crisis Averted for thwarting. One of the more notable possibilities with Gilgamesh is Noble Sacrifice. The printed HP total is so high you could burn through several activations and then recoup 6 HP and a tough status.