{MtG} Envenom mechanic: Twist the Blade

[Lunar Origins]

Twist the Blade {4B}

 

[ Instant ]

 

Envenom: You may only activate Twist the Blade when your opponent takes damage.

 

Target opponent takes 2 damage and gains an emblem that has "During your upkeep, take 1 damage unless you have more than 4 cards in your hand."

 

( You may only activate cards with Envenom directly after your opponent takes damage. )

[Trebuchet MS]

The moment they take damage means it's a very tiny window of activation unless you create as many opportunities as possible. The card looks overcosted, even after you notice that it affixes them to an unremovable version of The Rack.

 

I feel that you can afford to lower the cost to 2B or so, given that this card's usage timing is also hindered by its Envenom gimmick.