River Boa [Friday Night Magic 2000] San Diego Comic-Con 2015 Each player loses 1 life

Each player loses 1 life for each attacking creature they control if {B} was spent to cast this spell

where X is 2 plus the sacrificed creature's mana value

That creature becomes an artifact in addition to its other types

or triggered ability

then target opponent destroys four lands they control

River Boa [Friday Night Magic 2000] San Diego Comic-Con 2015 Each player loses 1 lifeSet: Friday Night Magic 2000 Type: Creature Snake Rarity: Rare Cost: {1}{G} Islandwalk (This creature can't be blocked as long as defending player controls an Island.) {G}: Regenerate River Boa. "But no one heard the snake's gentle hiss for peace over the elephant's trumpeting of war." Afari, *Tales*