Nissa tends to be a lands-matter kind of Planeswalker, with most of her cards doing things like untapping lands (Genesis Mage, Sage Animist, Vital Force, Steward of Elements, and Worldwaker), animating them into creatures (Vital Force, Sage Animist, Shadowed Boughs, Steward of Elements), or giving you extra abilities whenever you play a land
This isnt always the case, though
It doesnt specify that the creature needs to tap for mana, which means Eldrazi Scion and Eldrazi Spawn tokens benefit from the buff
Crobat G ( G) is really good for its Flash Bite PokePower, which puts 10 damage on one of the opponent's Pokmon
Note that the extra 20 DMG in these figures is because of the +20 super-effective damage
has grown more complex, so have card effects