Shard of Greed
From Archon Arcana
Shard of Greed • Shadows • Artifact • Rare • Action: Gain 1
for each friendly Shard. • Artist: Andreas Zafiratos • Card Number: AoA (315)

FFG Rulings
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One. You are using Shard of Greed as if it were yours, so Shard of Greed counts itself as a friendly Shard for the purposes of its ability.Source: Rulebook
I reap with Nexus (CoTA 305), which allows me to use an opponent’s artifact “as if it were” mine. I choose to use my opponent’s Shard of Greed (AoA 315), which lets me gain 1 Æmber “for each friendly Shard.” Shard of Greed is the only Shard in play. How much Æmber do I gain?
One. You are using Shard of Greed as if it were yours, so Shard of Greed counts itself as a friendly Shard for the purposes of its ability.
Source: Rulebook
Related Cards
Shard of Greed always appears in a deck with at least one other Shard: