Consider the timing and use of Trainer cards to get the most out of them
This auction is set to end on July 11th, 2020, at 4:50PM Eastern Time, or 3:50PM Central Time
Or you could be playing a deck that generates Energy otherwise and Harnessed Lightning kills nearly anything
Each player may only have one Legend Card of each card type (Monster, Spell, and Trap) in their Deck
While everything within the card is in color (black creates zombie tokens, green is primary in must be blocked if able, both colors can grant indestructible, and every color can care about equipment), powering up while equipped is almost exclusively seen in red/white
With Muddle the Mixture you can either hold it up as an inefficient Dispel, or transmute it away at sorcery speed to find your 2-mana card of choice