Just like the title, this is a strong and visual effect that's straight to the point: your spectator's heart.
You hand a heart card to your spectator. Then, in the blink of an eye, a heart magically appears on your deck. This leaves the spectator's card with a real hole in the middle of their card. You've proven that you can steal their heart with magic.
Don't ask for a reaction, they will go crazy with this on their own!
This is a memorable routine that will make you remembered by your spectators for a long time.
The gimmick is DIY. Easy to construct and is even easy to perform.
End clean, and guaranteed to bring a smile to everyone you meet.