Thank @DM_with_secrets a lot for his/her method. And I did my homework.

[ˈtreɪ.tə], [ˈræt.l̩.sneɪk], and [ˈæl.ə.ɡeɪ.tə] are 2 syllables, 3 syllables, and 4 syllables respectively.

Among the five -er/or words, 2 syllable words are [ˈɑː.tʃə] and [ˈstɔː.kə]. Considering “traitor” begins with a consonant, “Stalker” seems more suitable than “Archer”.

3 syllable words are [ˈhaɪ.dʒæk.ə] and [ˈd(j)uːn.raɪ.də]. Considering "ˈrattleˌsnake" and "ˈDuneˌrider" are both close compound nouns with a secondary stress, "Dunerider" may be better than "Hijacker".

4 syllable word is “Infiltrator”, pronouncing [ˈɪn.fɪl.treɪ.tə] or [ɪnˈfɪl.treɪ.tə].

So the whole sentence would be "Away down south in the land of Stalkers, Duneriders, and Infiltrators. Right away! Come away! Right away! Come away!"

Thank @DM_with_secrets a lot for his/her method. And I did my homework.

[ˈtreɪ.tə], [ˈræt.l̩.sneɪk], and [ˈæl.ə.ɡeɪ.tə] are 2 syllables, 3 syllables, and 4 syllables respectively.

Among the five -er/or words, 2 syllable words are [ˈɑː.tʃə] and [ˈstɔː.kə]. Considering “traitor” begins with a consonant, “Stalker” seems more suitable than “Archer”.

3 syllable words are [ˈhaɪ.dʒæk.ə] and [ˈd(j)uːn.raɪ.də]. Considering "ˈrattleˌsnake" and "ˈDuneˌrider" are both close compound nouns with a secondary stress, "Dunerider" may be better than "Hijacker".

4 syllable word is “Infiltrator”, pronouncing [ˈɪn.fɪl.treɪ.tə] or [ɪnˈfɪl.treɪ.tə].

So the whole sentence would be "Away down south in the land of Stalkers, Duneriders, and Infiltrators. Right away! Come away! Right away! Come away!"

Thank @DM_with_secrets again for pointing out "the problem with both Duneriders and Hijackers is that you're left with stress on the unimportant 'ers' syllable at the end. I would say Libra Clones is the only option that really fits in place of rattlesnakes"

Bless you, @DM_with_secrets

Thank @DM_with_secrets a lot for his/her method. And I did my homework.

[ˈtreɪtə], [ˈrætlsneɪk], and [ˈæləɡeɪtə] are 2 syllables, 3 syllables, and 4 syllables respectively.

Among the five -er/or words, 2 syllable words are [ˈɑːtʃə] and [ˈstɔːkə]. Considering “traitor” begins with a consonant, “Stalker” seems more suitable than “Archer”.

3 syllable words are [ˈhaɪdʒækə] and [ˈd(j)uːnraɪdə]. Considering "ˈrattleˌsnake" and "ˈDuneˌrider" are both close compound nouns with a secondary stress, "Dunerider" may be better than "Hijacker".

4 syllable word is “Infiltrator”, pronouncing [ˈɪnfɪltreɪtə] or [ɪnˈfɪltreɪtə].

So the whole sentence would be "Away down south in the land of Stalkers, Duneriders, and Infiltrators. Right away! Come away! Right away! Come away!"

Thank @DM_with_secrets a lot for his/her method. And I did my homework.

[ˈtreɪ.tə], [ˈræt.l̩.sneɪk], and [ˈæl.ə.ɡeɪ.tə] are 2 syllables, 3 syllables, and 4 syllables respectively.

Among the five -er/or words, 2 syllable words are [ˈɑː.tʃə] and [ˈstɔː.kə]. Considering “traitor” begins with a consonant, “Stalker” seems more suitable than “Archer”.

3 syllable words are [ˈhaɪ.dʒæk.ə] and [ˈd(j)uːn.raɪ.də]. Considering "ˈrattleˌsnake" and "ˈDuneˌrider" are both close compound nouns with a secondary stress, "Dunerider" may be better than "Hijacker".

4 syllable word is “Infiltrator”, pronouncing [ˈɪn.fɪl.treɪ.tə] or [ɪnˈfɪl.treɪ.tə].

So the whole sentence would be "Away down south in the land of Stalkers, Duneriders, and Infiltrators. Right away! Come away! Right away! Come away!"