Effect: [Activate: Main] [Once Per Turn] You may K type Characters: Your Leader and all of your Characters gain +1000 power during this turn
creature lord Lord of Atlantis
Oh my dear god, original Garfield.
Card Type: Trap Attribute: TRAP Icon: Counter Card Number: DUEA-EN077 Card Text: When a Spell/Trap Card, or monster effect, is activated during the Damage Step: Negate the activation, and if you do, destroy it
If you're looking to get a head start, my Tier List on 17Lands can help you assess card strength and make informed build decisions
They're also powerful cards, particularly Game Over, which could allow you to destroy every creature on the board for just three mana in the right circumstances