It allows your opponent to make mistakes while still giving you the final choice thus rendering it vastly more powerful than most cards that give your opponents control over aspects of the effect such as Vexing Devil
ZEXAL [edit] The "Rank-Up-Magic" cards were first introduced by Girag, who used "Rank-Up-Magic Barian's Force" to brainwash residents of Heartland City in order to take the "Numbers" from Yuma Tsukumo, Astral and Reginald Kastle
Lets take the new Sangan as a simple example: When this card is sent from the field to the Graveyard: Add 1 monster with 1500 or less ATK from your Deck to your hand
Each of these Commander decks showcases a different part of Doctor Whos rich history, with something here for every kind of Doctor Who fan
These are a little less efficient, are in unique colors, or have upside
Louvaq, the Aberrant has protection from Modified creatures, and grants you the ability of modifying your opponents' creatures by placing +1/+1 counters on them