If the creatures are too much to handle, it's good to use the creature destruction effect, and if the battlefield is manageable, destroying all lands is the way to go
Only two copies are known to exist, which makes it one of the rarest cards ever discovered
However, if the added monster is a normal monster, players can special summon it and destroy a monster the opponent controls with ATK that is equal to or higher than that monster's ATK
In a pinch, you can even destroy your own lands to maximize pressure
Memorial to Folly can bring a dead creature back to your hand, while Barren Moore can help with Life from the Loam to just draw more cards
Counters, tokens, and scaling creatures can turn a few points of life into real pressure if the deck is built around it