Wall of Forgotten Pharaohs

Defender
{T}: Wall of Forgotten Pharaohs deals 1 damage to target player or planeswalker. Activate only if you control a Desert or there is a Desert card in your graveyard.

Amonkhet Remastered

Defender
{T}: Wall of Forgotten Pharaohs deals 1 damage to target player or planeswalker. Activate this ability only if you control a Desert or there is a Desert card in your graveyard.

Hour of Devastation

Defender
{T}: Wall of Forgotten Pharaohs deals 1 damage to target player. Activate this ability only if you control a Desert or there is a Desert card in your graveyard.

If an ability checks whether you control a Desert or there is a Desert card in your graveyard, having more than one doesn’t matter. Controlling one is the same as controlling five. There is also no extra bonus for both controlling one and having one in your graveyard.