Crystron Citree (OP27-EN015) - OTS Tournament Pack 27 Unlimited

During your opponent's Main or Battle Phase (Quick Effect): You can target 1 non-Tuner in your GY; Special Summon it, but its effects are negated (if any), then immediately after this effect resolves, Synchro Summon 1 Machine Synchro Monster using only that monster and this card. These Synchro Materials are banished instead of being sent to the GY. You can only use this effect of "Crystron Citree" once per turn.