[6] As players trade with one another, they are given access to a special feature called "Card Pop!", which allows them to obtain cards that would otherwise be inaccessible in the main game
Thats huge in decks where you rely on your artifact creatures, engines, or token generators to stick around
If your extra creature is bounced or flickered, if it dies, or whatever, it's still a part of the gameyou can replay it, and it adds to your threshold, and so on
That creature's controller may sacrifice a land of their choice
So you might spend on Heliod's Intervention to get rid of that one enchantment that's stopping you, or make use of all your mana and put your life total out of reach and gain 10 or more life
You need to be careful with your triggers on this one, as you want to make sure that the Cactuars 10,000 Needles resolves before the Mage Slayers does, otherwise, youre just dealing one measly point of damage