Clever players try to mitigate this by stealing their opponents creatures with Insurrection to use as fodder or by flinging a giant Shimatsu at someones face, but it remains a true glass cannon strategy
(Quick Effect): You can banish this card until the End Phase to activate 1 of these effects;When your opponent activates a card or effect: Negate the activation, and if you do, destroy that card.When your opponent would Summon a monster(s): Negate the Summon, and if you do, destroy that monster(s).When an opponent's monster declares an attack: Negate the attack, then end the Battle Phase
Even if the opponent does manage to get rid of the cauldron, they often have to deal with what it created
Most cards this effective cost $20-50 or more, but Command Tower typically runs under $5
Synchro Monsters have some of the best support cards, allowing for easy Synchro plays to bring out powerful Boss Monsters