What I love about this sideboard is that the deck remains focused on its game plan even after the sideboard cards come in
Build a board of a cannon fodder, force your opponents creatures to the grave, draw cards, and transform Sephiroth to drain your opponents out
Introductions ensue, first the Sun Empire, then the River Heralds
For example, if X is 3 and you target a 2/2 creature, you will double its power once to 4, again to 8, and a third time to 16, making it a 16/2 creature until end of turn
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Sauron, Lord of the Rings: The creature card you choose doesn't need to be a card you milled