You can activate 1 of the following effects;

• Send 1 "Synchron" monster from your hand or face-up field to the GY; Special Summon 1 monster from your hand.

• Target 1 other card you control; destroy it, and if you do, Special Summon 1 "Synchron" monster with a different original name from your hand or GY.

You can only use this effect of "Synchro Dilemma" once per turn.