Not only is this the most dangerous card of the ones offered here this is one I would want as a cycle as well, every colour needs one of these
Woodweaver's Puzzleknot: 5 mana to get 6 Energy counters and gain 6 life
Additional multiples of 45 cards let a cube support more players
This is a very flexible ability, but it works particularly well with a board full of Saprolings, doubling it into a massive horde which, if left unchecked, will continue to double turn on turn, until it consumes the entire pod

Advanced Search Sets Random Syntax Alien Invasion Apostle of Invasion Begin the Invasion Dreadhorde Invasion Invasion Plans Invasion Reinforcements Invasion Submersible Invasion Tactics 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 Invasion of the Giants Realmbreaker, the Invasion Tree Rona, Herald of Invasion Ruthless Invasion Secret Invasion Skin Invasion Skittering Invasion Toll of the Invasion Tyranid Invasion

Overall Magic Design Highlights We did a good job at finding our roots