Synapse Sliver solves that problem by giving every sliver the potential to draw cards if they deal combat damage to a player
So if you have another copy in your hand, you effectively have a dead card that probably shouldn't be played while the other is out
By bouncing two monsters, it can recycle Normal Summon effects, get rid of Extra Deck monsters, or even bounce itself so it can be Set again
The ideal is getting use out of your ability-laden creatures first from Odric, Lunarch Marshal, trigger Kathril, then use Soulflayer, but where's the card draw to help you get there
I knew his defense had to be powerful
The original Computer Search (BW) remains expensive ($40+) because it is legal in the Expanded format and essential for competitive play there