To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Saheeli's second ability)
Scavenger, an upgrade to Vampire Nighthawk, seems like a great stall against aggressive strategies and a late-game finisher that helps regain your life total
When you activate it, you draw a card and then take your Ante card and place it into your graveyard, swapping it with Jeweled Bird
Master of the Pearl Trident Master of the Pearl Trident is basically a modern-day reprint of Lord of Atlantis, doing the exact same job: +1/+1 to merfolk and islandwalk across the board
It used to be banned in Modern, but its playable now (and hasn't broken anything just yet)
Casual Game