A 3/3 Dragon with flying and haste for five mana, whenever one or more Dragons under your control deals combat damage to a player, you can goad a creature that the player controls, forcing that creature to attack one of your other opponent's next turn if able
The constant damage is annoying, and so is putting a stop to lifegain
The alternative art copies already gain some serious traction on the market, which supports the price growth theory
Transdimensional Scout When this creature deals combat damage to a player, you may pay and sacrifice it
Liliana's Caress and Megrim plain and simply scale up with all the damage on card draw
You dont have that many creature-focused decks in blue, but when you pair this blue enchantment with white or red, you can suddenly draw a bunch of cards