This card would be useful in a "Malefic" Deck, since they usually do not Summon more than 2 monsters in 1 turn.
This card is good in a Spirit Deck; once they do not have huge swarming capabilities, this card will not affect the deck much, while will probably do to your opponent.
Combo with "Terminal World" to prevent your opponent from potentially bypassing this card's effect by summoning en masse during their Main Phase 2.
To prevent both cards' destruction via Summoned Monster Effects, a "Carrieroid" may help.
Combo with "Xyz Encore" to force your opponent to hit their summon limit faster when they attempt a big play to get around this card and force them to the End Phase instead.
You can use "Demise of the Land" to easily activate this card straight from your Deck, as "Demise of the Land" can be activated when your opponent Special Summons a monster.
This card is powerful in countering Xyz summons. Many of the Meta Xyz Decks perform Xyz Summons in 1 turn by swarming monsters. As Xyz Monsters need at least 2 materials, your opponent has to Summon the 2 materials, then perform the Xyz Summon, which will be the 3rd Summon - with this card's effect ending their turn immediately.
This card is also good against any Synchro-based deck, since it is necessary to perform at least 2 Summons before Synchro Summoning a monster.
If it will not impede on your strategy too much, to avoid having to have your Normal Summon count toward the 3 monster limit, Set your monster in Defense Position and still have 3 summons left before this card is triggered.
Use this in an Earthbound Immortal deck to slow the game down and stop opponents from overwhelming you.
This card is useful against Pendulum Summons, as it will prevent either player from swarming the field and performing an OTK.