Goblin Electromancer, Creature Abilities Stacking

[Its_over_9000]

If I have 2 or more creatures like goblin electromancer, can their abilities stack? Like if I have 2 goblin electromancers out do my spells get a -2 to their mana cost?

[Teysa karlov]

Yes they do, if you had 2+ of any creature with abilities such as that or like  {Stromkirk Captain}