Metamorphowords!

[King_Erlian]

Even
Ever
Aver
Acer
Aced
Aped
Sped
Shed
Shod
Shot
Soot
Soon
Moon
Morn

Change "rush" to "flow".

[The Rose-Tree Dryad]

Rush
Rust
Must
Most
Moot
Soot
Slot
Slow
Flow

Change "acts" to "part".

[King_Erlian]

Acts
Aces
Apes
Aped
Sped
Seed
Send
Sand
Land
Lard
Card
Cart
Part

Change "duke" to "earl".

[The Rose-Tree Dryad]

Duke
Dune
Done
Dole
Dale
Tale
Tare
Tars
Ears
Earl

Change "fire" to "oven".

[King_Erlian]

Fire
Fine
Find
Fend
Feed
Seed
Sped
Aped
Aced
Acer
Aver
Over
Oven

Change "back" to "pain".

[The Rose-Tree Dryad]

Back
Balk
Ball
Bail
Pail
Pain

Change "harm" to "arms".

[King_Erlian]

Harm
Hare
Hate
Hats
Rats
Rams
Rims
Aims
Arms

Change "slow" to "cube".

[The Rose-Tree Dryad]

Flow
Flaw
Flat
Feat
Felt
Fell
Fall
Pall
Pale
Pate
Cate <-- archaic; a choice food, delicacy
Cute
Cube

Change "sway" to "ways".

[King_Erlian]

Sway
Swat
Seat
Seas
Sets
Wets
Weds
Wads
Ways

Change "star" to "dust".

[The Rose-Tree Dryad]

Star
Sear
Seas
Leas
Less
Loss
Doss
Dost
Dust

Change "axis" to "evil".

[King_Erlian]

Axis
Axes
Aces
Aced
Acid
Amid
Amir (variant spelling of "emir")
Emir (a Muslim, usually Arab, military commander or local chief)
Emil (had to cheat and use a proper name - "Emil" is a boy's name in Germany)
Evil

Change "flow" to "cape".

[The Rose-Tree Dryad]

(Sorry I keep giving you impossible ones, Erlian! Usually I check on this site to make sure they're doable, but it was down for a while.)

Flow
Flop
Clop
Coop
Corp
Core
Care
Cape

Change "ties" to "shoe".

[King_Erlian]

Ties
Tees
Teem
Seem
Seam
Spam
Spat
Spot
Shot
Shoe

Change "late" to "flat".

[The Rose-Tree Dryad]

Late
Lats
Lets
Less
Lest
Fest
Feat
Flat

Change "cars" to "sped".

[King_Erlian]

Cars
Card
Bard
Band
Sand
Send
Seed
Sped

Change "plug" to "gulp".

[GlimGlum]

Plug
Plum
Slum
Slim
Slit
Slot
Soot
Root
Roof
Goof
Golf
Gulp

Change "Stay" to "Well"