Junora the Power Patron of Tuning

“1 Tuner + 2 non-Tuners For this card's Synchro Summon, you can treat 1 monster in your center Main Monster Zone as a Tuner. If this card is Synchro Summoned: You can negate the effects of all face-up cards your opponent controls. (Quick Effect): You can activate this effect; monsters your opponent controls in the same column as the "Elfnote" monster(s) you control cannot be used as material for a Fusion, Synchro, Xyz, or Link Summon, until the end of this turn. You can only use this effect of "Junora the Power Patron of Tuning" once per turn.”