Whenever a creature an opponent controls dies, Altac Bloodseeker gets +2/+0 and gains first strike and haste until end of turn. (It deals combat damage before creatures without first strike, and it can attack and as soon as it comes under your control.)

When Azra Bladeseeker enters, each player on your team may discard a card, then each player who discarded a card this way draws a card.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Chained Throatseeker can't attack unless defending player is poisoned.

: Look at the top card of your library. If it's a land card, you may reveal it and put it into your hand.

This spell costs less to cast for each artifact you control.

: Gearseeker Serpent can't be blocked this turn.

First strike

: Destroy target artifact if its mana value is equal to the amount of unspent mana you have.

, , Discard a card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Equipped creature gets +2/+1 and has ", Unattach Heartseeker: Destroy target creature."

Equip (: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)

Menace

When Horned Stoneseeker enters, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

When Horned Stoneseeker leaves the battlefield, sacrifice a Powerstone.

Flying, vigilance

When Kaalia, Zenith Seeker enters, look at the top six cards of your library. You may reveal an Angel card, a Demon card, and/or a Dragon card from among them and put them into your hand. Put the rest on the bottom of your library in a random order.

Whenever Likeness of the Seeker becomes blocked, untap up to three lands you control.

Reveal Lore Seeker as you draft it. After you draft Lore Seeker, you may add a booster pack to the draft. (Your next pick is from that booster pack. Pass it to the next player and it's drafted this draft round.)

Menace

At the beginning of your end step, put a bounty counter on target creature an opponent controls. For as long as that creature has a bounty counter on it, it has "When this creature dies, each opponent draws a card and gains 2 life."

Discard a card: Ravenous Bloodseeker gets +2/-2 until end of turn.

At the beginning of combat on your turn, target creature you control gets +1/+0 and gains haste until end of turn.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

At the beginning of your end step, if you gained life this turn, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Sacrifice two Blood tokens: Transform Restless Bloodseeker. Activate only as a sorcery.

Whenever an artifact you control enters, look at the top card of your library. If it's a land card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it into your graveyard.

: Draw a card, then discard a card. Activate only if you've cast a noncreature spell this turn.

Haste

Allure of Slaanesh — Each opponent must attack with at least one creature each combat if able.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Whenever you cast a noncreature spell, Seeker of the Way gains lifelink until end of turn.

When Seekers' Squire enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Deathtouch

Whenever Silas Renn, Seeker Adept deals combat damage to a player, choose target artifact card in your graveyard. You may cast that card this turn.

Partner (You can have two commanders if both have partner.)

When Spineseeker Centipede enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Delirium — Spineseeker Centipede gets +1/+2 and has vigilance as long as there are four or more card types among cards in your graveyard.

Storm Seeker deals damage to target player equal to the number of cards in that player's hand.

Vigilance

When Sunrise Seeker enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

+1: Untap up to two target artifacts.

−X: Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.

−5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn.

Assist (Another player can pay up to of this spell's cost.)

Flying

When Vampire Charmseeker enters, return target instant, sorcery, or creature card from a graveyard to its owner's hand.

+2: Create a 2/2 black Pirate creature token with menace.

−3: Destroy target artifact, creature, or enchantment. Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

−10: Target player's life total becomes 1.

Flying

Whenever you cycle or discard a card, target creature gains flying until end of turn.