Pako, Arcane Retriever

Partner with Haldan, Avid Arcanist
Haste
Whenever Pako, Arcane Retriever attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way.

Watcher for Tomorrow

Hideaway 4 (When this creature enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)
Watcher for Tomorrow enters tapped.
When Watcher for Tomorrow leaves the battlefield, put the exiled card into its owner's hand.

Sacred Wolf

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Cut the Earthly Bond

Return target enchanted permanent to its owner's hand.

Unity of Purpose

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Untap each creature you control with a +1/+1 counter on it.

Hydrosurge

Target creature gets -5/-0 until end of turn.

Lone Wolf

You may have Lone Wolf assign its combat damage as though it weren't blocked.

Wolfkin Bond

Enchant creature
When Wolfkin Bond enters, create a 2/2 green Wolf creature token.
Enchanted creature gets +2/+2.

Split the Party

Choose target player. Return half the creatures they control to their owner's hand, rounded up.

Hydroblast

Choose one —
• Counter target spell if it's red.
• Destroy target permanent if it's red.

Arlinn's Wolf

Arlinn's Wolf can't be blocked by creatures with power 2 or less.

Bonded Fetch

Defender, haste
{T}: Draw a card, then discard a card.

Kinnan, Bonder Prodigy

Whenever you tap a nonland permanent for mana, add one mana of any type that permanent produced.
{5}{G}{U}: Look at the top five cards of your library. You may put a non-Human creature card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Bond of Flourishing

Look at the top three cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in any order. You gain 3 life.

Living Wish

You may reveal a creature or land card you own from outside the game and put it into your hand. Exile Living Wish.

Survivors' Bond

Choose one or both —
• Return target Human creature card from your graveyard to your hand.
• Return target non-Human creature card from your graveyard to your hand.

Broken Bond

Destroy target artifact or enchantment. You may put a land card from your hand onto the battlefield.

Chakram Slinger

Partner with Chakram Retriever (When this creature enters, target player may put Chakram Retriever into their hand from their library, then shuffle.)
{R}, {T}: Chakram Slinger deals 2 damage to target player or planeswalker.

Hydrolash

Attacking creatures get -2/-0 until end of turn.
Draw a card.

Bond of Passion

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Bond of Passion deals 2 damage to any other target.

Bonds of Mortality

When Bonds of Mortality enters, draw a card.
{G}: Creatures your opponents control lose hexproof and indestructible until end of turn.

Haldan, Avid Arcanist

Partner with Pako, Arcane Retriever (When this creature enters, target player may put Pako into their hand from their library, then shuffle.)
You may play lands and cast noncreature spells from among cards you exiled that have fetch counters on them, and you may spend mana as though it were mana of any color to cast those spells.

Floodhound

{3}, {T}: Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Chakram Retriever

Partner with Chakram Slinger (When this creature enters, target player may put Chakram Slinger into their hand from their library, then shuffle.)
Whenever you cast a spell during your turn, untap target creature.

Living Destiny

As an additional cost to cast this spell, reveal a creature card from your hand.
You gain life equal to the revealed card's mana value.

Exuberant Wolfbear

Whenever Exuberant Wolfbear attacks, you may change the base power and toughness of target Human you control to Exuberant Wolfbear's power and toughness until end of turn.

Heart Wolf

First strike
{T}: Target Dwarf creature gets +2/+0 and gains first strike until end of turn. When that creature leaves the battlefield this turn, sacrifice Heart Wolf. Activate only during combat.

Young Wolf

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Arcbound Tracker

Menace
Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)
Whenever you cast a spell other than your first spell each turn, put a +1/+1 counter on Arcbound Tracker.

Destiny Spinner

Creature and enchantment spells you control can't be countered.
{3}{G}: Target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is the number of enchantments you control. It's still a land.

See the Truth

Look at the top three cards of your library. Put one of those cards into your hand and the rest on the bottom of your library in any order. If this spell was cast from anywhere other than your hand, put each of those cards into your hand instead.

Eternal of Harsh Truths

Afflict 2 (Whenever this creature becomes blocked, defending player loses 2 life.)
Whenever Eternal of Harsh Truths attacks and isn't blocked, draw a card.