All creatures your opponents control lose flying.
Stormtide prevents creatures without flying or islandwalk from attacking.

Opponents can't attack with most creatures

Lock

Archetype of Imagination

Stormtide Leviathan

All creatures your opponent control lose flying.
Magus of the Moat prevents things without flying from attacking.
Creatures your opponent can not fulfill the conditions necessary to attack.

Opponents can't attack

Magus of the Moat

At the beginning of your draw step, Island Sanctuary causes you to skip your card draw, and prevent creatures without flying and/or islandwalk from attacking you.
Because Archetype of Imagination causes all creatures to lose flying, only creatures with islandwalk can attack you.

Most creatures can't attack you

You do not draw cards during your draw steps

Island Sanctuary

All creatures your opponent control lose flying.
Moat prevents things without flying from attacking.
Creatures your opponent can not fulfill the conditions necessary to attack.

Moat

Archetype of Imagination causes your opponent' creatures to lose flying and be unable to gain flying.
Form of the Dragon prevents non-flying creatures from attacking you, and since none of your opponent' creatures can have flying, no creatures can attack you.

You can't be attacked

Form of the Dragon

Teferi's Moat prevents creatures of the chosen color without flying from attacking you.
Because Painter's Servant makes all creatures the chosen color, and Archetype of Imaginaton causes all creatures your opponents control to lose flying, no creatures can attack you.

Teferi's Moat

Painter's Servant

Activate Zedruu by paying {W}{U}{R}, giving Archetype of Imagination to an opponent.
Activate Phyrexian Altar by sacrificing Zedruu, adding one mana of any color.
Luminous Broodmoth triggers, returning Zedruu from your graveyard to the battlefield without flying due to Archetype of Imagination.
Repeat from step 2.

Combos with "Archetype of Imagination"