Spencer

When Spencer or another goblin enters,
this card deals 1 damage to target opponent.

{1}{r} - Target creature becomes a goblin in addition to its other types
{6}{r}{r}{r}, {t} - Until the end of the turn, gain control of all goblin creatures, untap them and they gain haste. Then remove this creature from play and return it to the battlefield under its owners control at the beginning of the next upkeep.