cast (your) lot with (someone/something)

to choose to share in whatever happens to another person or a group.

If I'm going to cast my lot with this team, I'm going to try to make them as good as possible any way I can.

Etymology: based on the literal meaning of cast your lot (= to throw dice or other objects as a way of deciding what will happen)

• the cream of the crop
• the curtain comes down on
• the curtain comes down on something
• the curtain falls
• the curtain falls on
• the curtain falls on something
• the cut and thrust of
• the cut and thrust of something
• the darkest hour is just before the dawn.
• the day of reckoning
• the dead hand of
• the dead hand of something
• the death knell
• the demon drink
• the devil finds work for idle hands.
• the devil take the hindmost
• the dice are loaded against
• the dice are loaded against someone
• the die is cast
• the dog days
• the done thing
• the dreaded lurgy
• the dust settles
• the early bird catches the worm.
• the earth moved