The thing is every turn they can make that same decision to get "just one more card." This is also a great card to play on someone who is clearly *behind* on the board to help them get back into the game and in that case you know they are never going to attack you
Expect many games to end on the spot with Moonshaker Cavalry
As a collectible, the Houndoom card (especially the Holo version) carries solid appeal because of the fan-favorite status of this fiery Dark -type
Ask for more card draw, a lower mana curve, budget alternatives, or a different win condition - Karn adapts in real time
If you control three, your opponents mill twelve more, and so on.
Titan of Littjara really feels like a member of that cycle, other than the fact that its an Illusion instead of a Giant