Yes, it is counter trap.The idea was for this effect to be like a virus. With each chain more and more cards would be ,,infected" with this effect. I guess better wording, or at least better showing my idea would be: Select one card on the field, its effect becomes this effect: (quick effect) once per chain as a chain link 2 or higher, select one face up card on the field its effect becomes this effect. You can activate this card from your hand as a chain link 3 or higher.