Walking Ballista enters with X +1/+1 counters on it.: Put a +1/+1 counter on Walking Ballista.Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target.
When Tenacious Pup enters the battlefield, you gain 1 life. You get a one-time boon with "When you cast a creature spell, that creature enters with an additional +1/+1 counter, trample counter, and vigilance counter on it."
As an additional cost to cast this spell, sacrifice a green creature.Search your library for a green creature card, put it onto the battlefield, then shuffle.
At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature.If a land is tapped for mana, it produces instead of any other type and amount.
Xantcha, Sleeper Agent enters under the control of an opponent of your choice.Xantcha attacks each combat if able and can't attack its owner or planeswalkers its owner controls.: Xantcha's controller loses 2 life and you draw a card. Any player may activate this ability.
First strikeWhenever Mirri, Weatherlight Duelist attacks, each opponent can't block with more than one creature this combat.As long as Mirri, Weatherlight Duelist is tapped, no more than one creature can attack you each combat.
Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control.At the beginning of your upkeep, add for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.
Counter target instant or sorcery spell unless its controller pays .Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
When Sanguine Brushstroke enters, create a Blood token and conjure a card named Blood Artist onto the battlefield.Whenever you sacrifice a Blood token, each opponent loses 1 life and you gain 1 life.
At the beginning of each player's upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The first player may reveal cards from the top of their library until they reveal a creature card. If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into...
Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.
Forsaken Crossroads enters tapped.As Forsaken Crossroads enters, choose a color.When Forsaken Crossroads enters, scry 1. If you weren't the starting player, you may untap Forsaken Crossroads instead.: Add one mana of the chosen color.
Elvish Reclaimer gets +2/+2 as long as there are three or more land cards in your graveyard., , Sacrifice a land: Search your library for a land card, put it onto the battlefield tapped, then shuffle.
FlyingWhenever a Dragon you control becomes the target of a spell or ability an opponent controls, destroy target nonland permanent that player controls.
Avoidance — Whenever you cast a noncreature spell, exile up to one target nonland permanent you control, then return that card to the battlefield under its owner's control.
: Look at the top three cards of your library, then put them back in any order.: Draw a card, then put Sensei's Divining Top on top of its owner's library.
Sunburst (This enters with a charge counter on it for each color of mana spent to cast it.), Sacrifice Engineered Explosives: Destroy each nonland permanent with mana value equal to the number of charge counters on Engineered Explosives.
