The Kenriths' Royal Funeral [March of the Machine: The Aftermath]

When The Kenriths' Royal Funeral enters the battlefield, exile up to two target legendary creature cards from your graveyard. You draw X cards and you lose X life, where X is the greatest mana value among cards exiled this way.

Legendary spells you cast cost {1} less to cast for each card exiled with The Kenriths' Royal Funeral.