
Angel of Serenity | Creature | Angel | Flying
When Angel of Serenity enters the battlefield, you may exile up to three other target creatures from the battlefield and/or creature cards from graveyards.
When Angel of Serenity leaves the battlefield, return the exiled cards to their owners' hands. | Aleksi Briclot

Isperia, Supreme Judge | Legendary Creature | Sphinx | Flying
Whenever a creature attacks you or a planeswalker you control, you may draw a card. | Scott M. Fischer

Armada Wurm | Creature | Wurm | Trample
When Armada Wurm enters the battlefield, create a 5/5 green Wurm creature token with trample. | Volkan Baǵa

Trostani, Selesnya's Voice | Legendary Creature | Dryad | Whenever another creature enters the battlefield under your control, you gain life equal to that creature's toughness.
{1}{G}{W}, {T}: Populate. (Create a token that's a copy of a creature token you control.) | Chippy