Creativity 3/5 Decent, but is more of a mashup of 2 units,
Theme 4/5 Nice name, jousters need to dodge sometimes.
Execution 3/5 base=weak, +=balanced, ++= undercosted, +++ = overcosted.

Creativity 3/5 ok idea, wont move back too far
Theme 4/5 I like this one, but scorpions usually poison.
Execution 2/5 the unit feels weak because of the cost... except for +++

Creativity 4/5 good idea.
Theme 2/5 name feels meh.
Execution 0/5 base: horribly weak. +: semi balanced?, ++: fencer rook, op. +++: queen haunted armor, horridly op... you do realize with ghosts this unit is op right? yea just take a minion and check the king with armor... on turn 1 ._.

Creativity 4/5 Good idea, but could be op or worthless.
Theme 3/5 Its a cool idea, but eh
Execution 2/5 A piece to just checkmate isn't really that good, pieces have skillsets and if one skillset is only-useful-for-checkmate that isn't the best.