Its about how many people want it
You would take half with Gisela out, so just a single damage per nonbasic land you are running, while your foes double, so essentially four damage per nonbasic land they control
Birds so far seem to deal a lot with creatures entering and leaving, and Bats care about lifegain and life loss, so the card has applications in typal decks for both
Pikachu V #170 Pokemon Vivid Voltage Keep track of your collection value over time
8 Blue-Black Final Fantasy Decks Are A Unique Type Of Control Blue And Black Cards Have Late-Game Payoffs For Having A Full Graveyard Final Fantasy 's blue and black decks focus on a unique style of control
If your deck cares about +1/+1 counters, it plays creatures, so Rocksteady will trigger