Unless I am missing something, this effect is a little lame unless you have some effect that benefits from it, and I have not come across it yet in these cards (something like 'whenever an opponent draws a card, they lose 1 life')
Merfolk A Merfolk enters the battlefield under your control
Mai, Scornful Striker With Vivi Ornitier banned, its unclear whether the blue-red spellslinger decks will remain as strong as before, but the archetype has enough card draw, cantrips, and efficient burn that many players expect some version of it to survive
That means you can afford to splash out a little bit more in black for cards that provide options and won't ever be dead weight in hand (obviously once you can cast it, everything with a cost can be dead when you can't pay it...)
Deharme Many of the strongest creatures in Magic are so powerful because of an ability that triggers when they enter the battlefield
And they can make attacking you look undesirable, with Zagras, Thief of Heartbeats and Edric, Spymaster of Trest
