The Tempest

Prospero said this to Ariel to threaten him, when Ariel was attempting to disobey Prospero

Dost thou forget from what torment I did free thee

After Prospero gives Ariel a script to play as harpy.

My high charms work, and these, mine enemies, are all knit up in their distractions. They are now in my power - Prospero

Stephano said this to Trinculo and Caliban, expressing how they will gain power over this island because as far as they know the king and his men have drowned.

The King and all being drowned. We will inherit here.

Antonio is trying to convince Sebastian that killing his brother is a good idea and the power he will gain is worth the loss of his brother

Here lies your brother, no better than the earth he lies upon. If he were that which now hes like - thats dead - whom I with this obedient steel, three inches of it, can lay to bed forever - Antonio

When Antonio and Sebastian are deciding to kill the king

Look how well my garments sit upon me, much feater than before. My brothers servants were then my fellows. Now they are my men - Antonio

Stephano to Trinculo and Caliban about killing Prospero, after Caliban convinces Stephano to Kill Prospero

Monster, I will kill this man. His daughter and I will be king and queen - save our graces - and Trinculo and thyself shall be viceroys. - Stephano