With Hangarback Walker, they cant just ignore it because its threatening to grow and take over the game, so they have to kill it as soon as possible but then you get that value on the way out
Kuja, Genome Sorcerer / Trance Kuja, Fate Defied Rating: 7/10 Ive already mentioned that the wizard tokens are incredibly valuable, so creating a free one every turn sounds awesome
I mentioned this concept when describing Austere CommandAustere Command, however choosing the cards that have a greater breadth of targets that ensures we have a decent chance to answer as many unique situations as possible
Honorable Mentions: Partners It feels a little disingenuous to put partners on this list, since they usually combine with another creature to form a different color identity altogether
Thraximundar Thraximundar swings as a 6/6 with haste, and it forces your opponent to sacrifice a creature each time it attacks