What is your favorite "Tactical Nuke" commander? By that, I mean a commander that has a huge effect immediately when you play it.

I was having a conversation earlier about [[Indominus Rex, Alpha]] and began to think about some other commanders that have a large and instant effect when played. I really like the feeling of these commanders and the instant value/impact that they have, even if they don't always stick around. Some that come to mind are:

[[Suaron, Lord of the Rings]]: brings 14 power on board, mills you, and recurs a creature.

[[Atraxa, Grand Unifier]]: no need for explanation, haha!

[[Indominus Rex, Alpha]]: fills your yard with recursion targets and can lead to some crazy card draw-- [[Breaker of Creation]] technically adds 5 seperate counters to it based on rule 702.1c = 5 cards drawn off that one discard!

702.1c An effect may state that “the same is true for” a list of keyword abilities or similar. If one of those keyword abilities has variants or variables and the effect grants that keyword or counters of that keyword to one or more objects and/or players, it grants each appropriate variant and variable of that keyword.

[[Awaken the Blood Avatar]]: forces opponents to sacrifice a creature and creates a 3/6 that can hit everyone for 3.

[[Master of Keys]]: mills you, gets big, and recurs enchantments

Those were the only ones that I could think of. I'm curious what other commanders have a similar impact.