Rastakhan's Rumble Guide
Kalimos is necesary?
It is very often your win condition. They simply don't see the six damage to face coming.
I had better success last month than I've had in a long time without Kalimos, Al'Akir, or Hagatha. I won't say you'll be gliding up to rank 2 with your eyes closed, but there's a lot of strong even cards you can use.
Replacement for Al'Akir the windlord?
It's hard to replace Al'akir, but Sunwalker is about the closest thing you can get.
Argent Commander is a possible replacement, but as with most legendaries, they are in decks for a reason and a 'replacement' is often very hard to find.
You can't. She is too strong to find a fine replacement.
I replaced Hagatha the Witch with the Mana Tide Totem. I know that's not as good as Hagatha, but with my luck...I would craft Hagatha and the card would sit at the bottom of my deck anyway so I'll make due without that one card for now.
Maybe Thrall or Grumble
Marin works in my experience.
right back at u