You can't cast Rakdos, Lord of Riots unless an opponent lost life this turn.
Flying (This creature can't be blocked except by creatures with flying or reach.), trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Creature spells you cast cost less to cast for each 1 life your opponents have lost this turn.
Vintage
Historic
less to cast for each 1 life your opponents have lost this turn.
