Focusing on Legendary Creatures can allow players to build some tremendously powerful decks, such as Jodah, the Unifier in Commander, and Annie Joins Up will be right at home in decks like these
For example, it can't be used during the resolution of an ability that says "Counter target spell unless its controller pays 3." If an artifact you control has a mana ability with T in the cost, activating that ability while casting a spell with improvise will result in the artifact being tapped when you pay the spell's costs
Plus, a well-timed counterspell will stop it from becoming a problem in the first place
Watermark: Conspiracy Seal Illustrated by John Avon Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
You might think, oh, well its impossible to play that many cards in a single turn, but youd be wrong
The ability to fill the graveyard and then bring back dozens of game-altering enchantments with one four-casting-cost sorcery was just too powerful