Retribution of the Ancients | Enchantment | | {B}, Remove X +1/+1 counters from among creatures you control: Target creature gets -X/-X until end of turn. | Svetlin Velinov
Hardened Scales | Enchantment | | If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead. | Mark Winters
Trail of Mystery | Enchantment | | Whenever a face-down creature enters the battlefield under your control, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Whenever a permanent you control is turned face up, if it's a creature, it gets +2/+2 until end of turn. | Raymond Swanland
Jeskai Ascendancy | Enchantment | | Whenever you cast a noncreature spell, creatures you control get +1/+1 until end of turn. Untap those creatures.
Whenever you cast a noncreature spell, you may draw a card. If you do, discard a card. | Dan Scott
Mardu Ascendancy | Enchantment | | Whenever a nontoken creature you control attacks, create a 1/1 red Goblin creature token that's tapped and attacking.
Sacrifice Mardu Ascendancy: Creatures you control get +0/+3 until end of turn. | Jason Chan
Abzan Ascendancy | Enchantment | | When Abzan Ascendancy enters the battlefield, put a +1/+1 counter on each creature you control.
Whenever a nontoken creature you control dies, create a 1/1 white Spirit creature token with flying. | Mark Winters
Sultai Ascendancy | Enchantment | | At the beginning of your upkeep, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) | Karl Kopinski
Temur Ascendancy | Enchantment | | Creatures you control have haste.
Whenever a creature with power 4 or greater enters the battlefield under your control, you may draw a card. | Jaime Jones