Nettling Imp (Retro) [30th Anniversary Edition] 30th Anniversary Edition Set: Multiverse Legends Type: Legendary

Set: Multiverse Legends Type: Legendary Creature — Merfolk Wizard Rarity: Rare Cost: {2}{U} This spell costs {1} less to cast for each artifact you control

but I believe a more mundane power source might suffice

Lorien Lieutenant enters the battlefiels with X +1/+ counters on it

Whenever a player casts an instant or sorcery spell that targets only a single Golem

Nettling Imp (Retro) [30th Anniversary Edition] 30th Anniversary Edition Set: Multiverse Legends Type: LegendarySet: 30th Anniversary Edition Type: Creature Imp Rarity: Uncommon Cost: {2}{B} {T}: Choose target non Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only during an opponent's turn, before attackers are declared.