Is there a card that does what i need

[Mewohkie]

I cant remember off the top of my head if there is a card that states when a card is sent to the graveyard your opponent sends a card to the graveyard as well. Could anyone help me out?

[Pure Chaos]

Forced Requisition
Group: Trap Card
Type: Trap
Icon:Continuous
You can activate this card when you discard from your hand. After that, each time you discard from your hand, your opponent must also discard the same number of cards from his/her hand.

[Mewohkie]

Thanks a lot.

[SilentMagician7]

Hey wait don't forget

Michizure
Group: Trap Crad
Type: Normal Trap
Icon: None
You can activate this card when a monster is sent from the field to your Graveyard. Destroy 1 monster on the field.

[flame controler]

or blast with chain

when it's destroyed, you can destroy something of theirs

[xmaster of puppetsx]

you probly were thinking of Forced Requisition