Two-for-ones are only good at all because they are supposed to be generating card advantage for you
Lets take a look at two cards from CCCs past that have used simple templating to deliver powerful results
Sphinx of the Cycle Sphinx of the Cycle Rock Effect C Common Related Cards View as Gallery View as List Book of Moon X SPELL Quick-Play Target 1 face-up monster on the field
With its Ward ability to help protect it, you can easily go wide with this card and its a great addition in any cube
Number 87 Language English Legal Formats Commander, Legacy, Modern, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pauper, Pioneer, Standard, Timeless Rulings (10/4/2004) The exchange isn't optional
Invasion of Innistrad Invasion of Innistrad Battle Siege (As a Siege enters, choose an opponent to protect it