Before the game begins 🠪 You may reveal a Matrix of Leadership from your deck and put it into your hand.
Up to 3 copies of Matrix of Leadership can fit into the Utility slot of your Rodimus Prime, Worthy Leader.
Some cards refer to Autobots or Decepticons. How do I know which characters are Autobots?
Autobots have a red frame and the Autobot insignia in the lower right corner. Decepticons have a purple frame and the Decepticon insignia in the lower right corner. A few characters have "Autobot" or "Decepticon" in their names, although these aren’t the only Autobots and Decepticons.
When do you choose to add stratagems out of your sideboard? When declaring characters or when sideboarding battlecards?
Stratagems are played concurrently with the starting team for a game. This is required otherwise cards like Master Converter and Aerial Enhancements would not effect the starting team, leading Windsweeper to be sad when Blitzwing and Tracks don't count as Planes.
Does a stratagem changing the attack/defence of a character change the base values for the character?
No. For example, if Private Pteraxadon’s Binary Edgewing Scythe upgrade mode removes the base defense from a defending Windblade, Combiner Hunter, it would not remove the +1 from the Camien Toughness stratagem.
You can play up to one stratagem for each different character, trait, or faction listed on the stratagem, as long as your starting team includes that character, trait, or faction. For example, if your starting team is all Autobots and includes Optimus Prime - Legendary Warrior, you can play both Heroic Spotlight and Duty & Honor.