Elton John: Now go save the world.
Harry Hart: If I save the world, will you get me two tickets to your next show?
Elton John: If you save the world, I'll get you a backstage pass, baby.
Eggsy: We've got brains, skills, skipping rope?
Whiskey: It's a lasso.
Eggsy: Whatever.
Answer: At the time, these people only had a really short time to save the world. Merlin thought that, with the landmine, he could sacrifice himself along with many guards to save the world.