When Seven Deadly Sins has seven or more sin counters on it, sacrifice it. {B}{B}, Put a sin counter on Seven Deadly Sins: Destroy target creature. This ability costs {1} more to activate for each sin counter on Seven Deadly Sins.
2018-09-03
Seven Deadly Sins uses a conditional-when trigger, meaning that any time its condition is true and the ability is not on the stack, the ability will trigger. If you counter the ability, it will simply retrigger immediately after.