Unseenable Dragon

(Hand):You may discard this card as a [Heal] for the cost of calling a G guardian. :When this unit is put on from hand, [remove a [Heal] from hand or drop], and perform one of the following according to which battle of this turn it is. •First battle - 1, choose one of your vanguards, until end of turn, it gets ":All of your rear-guards cannot be chosen by your opponent's card effects.", and +5000. •Second or third battle - This unit gets +20000 until end of that battle.