Bouncing back to your hand isn't as bad as sacrificing a creature, but the effect still sets you back in a big way and can be followed up with a nasty counterspell
Even better, the first spell with flash or instant spells you cast on your opponents turn also gain cascade, letting you gain double the value even when its not your turn
There are quite a few decks, like Tron, Living End, Amulet Titan, and more that give Ragavan a disturbing amount of time to accumulate advantage
Regardless how you use Selfsame Simulacrum , it can serve as an excellent addition to any strategy
This ensures accuracy and saves you valuable time, allowing you to focus on what truly matters: building your collection
Thanks to Shift, you can play her for two less, which is always a royal bonus