Strionic Resonator [Masters 25] Oath of the Gatewatch Prerelease Promos you may reveal a Goblin

you may reveal a Goblin card from your hand

put a +1/+1 counter on it

Battalion — Whenever Firemane Avenger and at least two other creatures attack

but its power was unmistakable

Set: From the Vault: Realms Type: Land Rarity: Mythic {T}: Add {C}{C}

Strionic Resonator [Masters 25] Oath of the Gatewatch Prerelease Promos you may reveal a GoblinSet: Masters 25 Type: Artifact Rarity: Rare Cost: {2} {2}, {T}: Copy target triggered ability you control. You may choose new targets for the copy. (A triggered ability uses the words "when," "whenever," or "at.") Its tines cannot be rung by mere physical force. Only magic of great power can start its eldritch resonance.