When returning cards that were revealed from a private area such as the deck or security stack by an effect, it isn't considered adding cards to such areas, therefore this card's effect doesn't apply
#7 Time Walk Time Walk is a simple as it is powerful
But yeah, its ability is nearly useless in a mono-color deck unless you only have your Sol Ring and utility lands left to tap
Youre using two cards from your hand to stop one of your opponents, while Counterspell always trades one-for-one, usually at a mana advantage , but the mana disadvantage is often minuscule
Once you get enough mana to unlock Fractured Realm, you can double all triggers from your permanents, be it enter triggers, death triggers, or attack triggers, and thats frankly unheard of in MTG