Forum:Spell Counters and sending cards to the graveyard

Am I allowed to simply send cards on my side of the field to the graveyard? Do I need a special effect or some spell card to do this? For example say I have the "Magical Citadel of Endymion" out on the field, and something like a "Silent Magician lvl4" and I have some counters on it. Now if I wanna get those counters to my field card, can I just send my monster card to the graveyard, and get his spell counters put on the card as due to it's special effect, or does there have to be a more indirect way of doing this?