Beyond providing reasonable value in the zone, Agatha can bubble, bubble, toil and double
You can really play havoc with combat math, and suddenly, a lot of creatures that were supposed to stay alive are falling, all while you gain a bit of life
Invasion of Alara Invasion of Amonkhet Invasion of Arcavios Invasion of Azgol Invasion of Belenon Invasion of Dominaria Invasion of Eldraine Invasion of Ergamon Invasion of Fiora Invasion of Gobakhan Invasion of Ikoria Invasion of Innistrad Invasion of Ixalan Invasion of Kaladesh Invasion of Kaldheim Invasion of Kamigawa Invasion of Karsus Invasion of Kylem Invasion of Lorwyn Invasion of Mercadia Invasion of Moag Invasion of Muraganda Invasion of New Capenna Invasion of New Phyrexia Invasion of Pyrulea Invasion of Ravnica Invasion of Regatha Invasion of Segovia Invasion of Shandalar Invasion of Tarkir Invasion of Theros Invasion of Tolvada Invasion of Ulgrotha Invasion of Vryn Invasion of Xerex Invasion of Zendikar
From there, you can start ripping your opponents hand apart with each attack
To actually get up to one of the higher floors, search around for a small door or entrance to the building, Ive found that multiple times these could be around the back
