Monster summon abilities place new monsters on the board that behave exactly like the normal monsters, acting according to played monster ability cards of their type.
Summoned monsters are placed in an empty hex adjacent to the summoning monster and also as close to an enemy as possible. If there are no empty adjacent hexes or there are no available standees of the summoned monster type, the summon fails.
Summoned monsters never act on the round they are summoned, nor do they drop money tokens when killed.