When Titania, Protector of Argoth enters, return target land card from your graveyard to the battlefield. Whenever a land you control is put into a graveyard from the battlefield, create a 5/3 green Elemental creature token.
Choose one — • Search your library for up to X land cards, reveal them, put them into your hand, then shuffle. • Nylea’s Intervention deals twice X damage to each creature with flying.
Flash Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, draw a card.
Whenever Marit Lage’s Slumber or another snow permanent you control enters, scry 1. At the beginning of your upkeep, if you control ten or more snow permanents, sacrifice Marit Lage’s Slumber. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.
Deathtouch Revolt — Narnam Renegade enters the battlefield with a +1/+1 counter on it if a permanent you controlled left the battlefield this turn.
T, Discard a card: Up to one target creature can't be blocked this turn. Whenever Key to the City becomes untapped, you may pay 2. If you do, draw a card.
As an addition cost to cast Nahiri's Wrath, discard X cards. Nahiri's Wrath deals damage equal to the total converted mana cost of the discarded cards to each of up to X target creatures and/or planeswalkers.
Flash Flying You may cast historic spells as though they had flash. (Artifacts, legendaries, and Sagas are historic.)
Enrage — Whenever Siegehorn Ceratops is dealt damage, put two +1/+1 counters on it. (It must survive the damage to get the counters.)
When Woe Strider enters the battlefield, create a 0/1 white Goat creature token. Sacrifice another creature: Scry 1. Escape—3BB, Exile four other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.) Woe Strider escapes with two +1/+1 counters on it.
This spell costs 1 less to cast for each Knight you control. Creatures you control get +1/+1. Whenever you cast a legendary spell, create a 2/2 white Knight creature token with vigilance. 3W, T: Create a 2/2 white Knight creature token with vigilance.
Rivendell enters the battlefield tapped unless you control a legendary creature. T: Add U. 1U, T: Scry 2. Activate only if you control a legendary creature.
Creatures you control get +10/+10 and gain vigilance until end of turn.
Flying Whenever this creature attacks, you may sacrifice another creature. If you do, put a +1/+1 counter on this creature. Whenever another nontoken creature dies, draw a card.