There are cards that are both threats and answers (such as Teferi, Hero of Dominaria or Sandwurm Convergence), but KernTheGerm gave us this nugget of wisdom: there are no wrong threats, only wrong answers
lower-grade Pikachu card more expensive General question 35 2172 September 14, 2018 Ebay Scammer: Chad Gordon Gordobritt - Fake 1st Ed Base Box General sour-grapes 26 1444 May 15, 2017 Pikachu Illustrator being authenticated on TV (it's a fake) General general-board 11 1145 January 10, 2022 Does this 1st Edition Jungle Box Look Legit
Being able to destroy opposing lands for more or less zero mana, at instant speed, without much opportunity for countermagic
In this case, you play a short game called Sudden Death (use only 1 Prize card each instead of 6)
This is not to say that they don't have a strategy