Card NamePikachu
If this card, which was Summoned this way, is destroyed by your opponent's card (by battle or card effect), and sent from your side of the field to your Graveyard, and both players have a hand: You can discard 1 card, then your opponent discards 1 card
Mirri works great at the head of a cat creatures deck, too, since many of those creatures have abilities relevant to equipment, which they can slap onto Mirri to buff it up even further
Besides the fact you can use it on your opponent's turn, it can be a boardbreaker when you go second on your own turn
Topologics Topologics are links that activate their effect when one or more Monsters are Summoned by Special Summon in the zones which they point to, this way, the effects vary from destroying to banishing the cards on board
However, its not as great as it looks in a format where cards like Farewell and Toxic Deluge are popular