Omen Machine + Vexing Bauble

C identity

Commander legal

The 2 combo pieces

• Omen Machine
• Vexing Bauble

How to execute it

1. At the beginning of each draw step, Omen Machine prevents the active player from drawing a card, and causes them to exile the top card of their library, and cast that card if its a spell without paying its mana cost, or put it onto the battlefield if it's a land.
2. If a player casts a spell this way, Vexing Bauble triggers, countering that spell.

What the combo produces

• Lock
• Players can't cast noncreature spells exiled by Omen Machine
• Players can't draw cards