Cards on the battlefield are called permanents to differentiate them from instants and sorceries, which are never on the battlefield
Again, deeply unhappy opponents
First up is the reprinting of a couple of Mono-Blue deck all-stars: Harbinger of the Tides, Tempest Djinn, Dive Down, Tolarian Terror, and Spectral Sailor
Not surprisingly, many of the most sought-after cards since the Pokmon TCG rarity scale was retooled at the beginning of Gen 9 have been SAR cards
It does best in mono-green, of course, but I could see running it in a 2-color deck
An example would be raskas Contempt At the end of its season, ending both Ixalan and Rivals of Ixalan, Contempt was pretty cheap