Just a little card

D.D. Rallier
Spellcaster/DARK/Lv4/1600/1300
When this card is Normal Summoned, you can Banish 1 Monster on the field. If this effect is activated, during each of your opponent's Standby Phases, banish this card and Special Summon that monster to your opponent's side of the field. During each of your Standby Phases, banish that monster and Special Summon this banished monster.

3 of these = Summon D.D. Ralliers to the opponent's side of the field each standby phase, up to 9 times, for free attacks and burn.

Control of the monsters don't switch. What's yours will still be yours, and what your opponent's is will still be your opponent's.

When this card is Normal Summoned, you can Banish 1 Monster on the field.

I banish a D.D. Rallier on my side of the field.

If this effect is activated, during each of your opponent's Standby Phases, banish this card and Special Summon that monster to your opponent's side of the field.

Standby Phase, Special Summon the D.D. rallier by banishing the activating D.D. Rallier to the opponent's side of the field.

During each of your Standby Phases, banish that monster and Special Summon this banished monster.

Banish D.D. Rallier and get D.D. Rallier back, and banish another D.D. Rallier to get D.D. Rallier back and put another on the opponent's side of the field.

Control of the monsters don't switch. What's yours will still be yours, and what your opponent's is will still be your opponent's.

You aren't writing the target text correctly then.

Ok then. Thanks.

When this card is Normal Summoned, you can Banish 1 Monster your opponent controls. If this effect is activated, during each of your opponent's Standby Phases, banish this card and Special Summon that monster to your opponent's side of the field. During each of your Standby Phases, banish that monster and Special Summon this banished monster.