Combos Utilizing Martyr-sq-s-Cause

The Goblin Warrens give you the creatures you need to sacrifice to prevent the damage to you.

use the e.n. to keep reviving the o and then the m.c. is to prevent as much as you want whilst the g.b. is to deal as much damage as you want

Lingering Mirage turns opponent's land into an island. Use Seasinger to take control of opponent's creature. Sacrifice that creature to prevent source of damage to you or your creature.

Tap Tidal Warrior to turn opponent's land into an island. Use Seasinger to take control of opponent's creature. Sacrifice that creature to prevent next source of damage to you or your creature.

You sacrifice False prophet with martyrs cause to prevent damage so false prophet its put into the graveyard and all creatures are removed from the game.

have martyr's cause in play. attack with dark maze. before the end of your turn, sac dark maze to prevent damage from an opponent's source to a creature or yourself.

when you get them both out, make tons of 1/1 flyers and just sac one to prevent against 1 source (great against blast decks)

before blastoderm fades away, sacrifice it prevent damage to yourself or one of your creatures.