Yes, particularly al’akir. You can get them fairly reliably through Servant (I once played three Kali’s in one game), although Kali is an powerful win condition, so if you plan to play any elemental deck, I would craft him soon. You will probably need something for burst damage, though. The simplest option would be to replace both legendaries with some mix of bloodlust, rockbiter, or fire elemental, or blazecaller. The same applies to harrison and, to a lesser extent, aya (though she is very important to the jade package. how much emphasis you put on the power of jade is up to personal preference)
Replacement for Aya?
Any Replacement for Harrison Jones ?
Are kalimos and alakir replaceable ?
Yes, particularly al’akir. You can get them fairly reliably through Servant (I once played three Kali’s in one game), although Kali is an powerful win condition, so if you plan to play any elemental deck, I would craft him soon. You will probably need something for burst damage, though. The simplest option would be to replace both legendaries with some mix of bloodlust, rockbiter, or fire elemental, or blazecaller. The same applies to harrison and, to a lesser extent, aya (though she is very important to the jade package. how much emphasis you put on the power of jade is up to personal preference)
though if you don’t have al’akir, corpsetaker doesn’t make much sense either, so you should take her out too