Activate Liquimetal Coating by tapping it, causing Hesitation to become an artifact until end of turn.
At the beginning of your combat phase, Mishra triggers, creating a token copy of Hesitation that is a 4/4 artifact creature named Mishra's Warform in addition to its other types.
At the beginning of your end step, Mishra's Warform triggers, causing you to fail to sacrifice Mishra's Warform due to The Master.
Whenever a player casts a spell, Mishra's Warform triggers, countering that spell and causing you to fail to sacrifice it due to The Master.