Gremlin Sputabrace

An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.

In a Two-Headed Giant game, Blisterspit Gremlin's first ability causes the opposing team to lose 2 life.

Players can cast spells and activate abilities after the triggered ability resolves but before the spell that caused it to trigger does.