These powerful cards were balanced around the delayed value players got for playing them, so casting these spells at any time is a powerful way to break them
But these things are also beautiful, if you just stop and look at them, and TCG Pocket carries that beauty over surprisingly well, most obviously with the handful of snazzy "immersive artwork" ones that take you on a guided, 2.5D tour of their own little goldfish bowl worlds
Honorable Mentions: Time Walk, Time Vault, and Emrakul, the Aeons Torn This trifecta of extra turn spells are among the strongest in the game, which has led to their bans in Commander, albeit for different reasons
In Commander, where players often leave openings in combat, this ability can snowball into overwhelming advantage very quickly
These powerful colorless artifacts are great options for any token or sacrifice deck
Even if the Saheeli Rai has been on the battlefield a few turns and has enough loyalty to survive a Shock immediately, after the Guardian Flickers the Sahelli back onto the battlefield, it will no longer survive the Shock, which makes having access to the red instant at all times vital