Djeru's Resolve

Untap target creature. Prevent all damage that would be dealt to it this turn.
Cycling {2} ({2}, Discard this card: Draw a card.)

Lita, Mechanical Engineer

Vigilance
At the beginning of your end step, untap each other artifact creature you control.
{3}{W}, {T}: Create a 5/5 colorless Vehicle artifact token named Zeppelin with flying and crew 3. (It has "Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.")

Militia Rallier

Militia Rallier can't attack alone.
Whenever Militia Rallier attacks, untap target creature.

Wylie Duke, Atiin Hero

Vigilance
Whenever Wylie Duke, Atiin Hero becomes tapped, you gain 1 life and draw a card.

Dauntless Aven

Flying
Whenever Dauntless Aven attacks, untap target creature you control.

Rustler Rampage

Spree (Choose one or more additional costs.)
+ {1} — Untap all creatures target player controls.
+ {1} — Target creature gains double strike until end of turn.

Burst of Energy

Masako the Humorless

Flash
Tapped creatures you control can block as though they were untapped.

Halo Fountain

{W}, {T}, Untap a tapped creature you control: Create a 1/1 green and white Citizen creature token.
{W}{W}, {T}, Untap two tapped creatures you control: Draw a card.
{W}{W}{W}{W}{W}, {T}, Untap fifteen tapped creatures you control: You win the game.

Emerald Charm

Choose one —
• Untap target permanent.
• Destroy target non-Aura enchantment.
• Target creature loses flying until end of turn.

Escape from Orthanc

Target creature gets +1/+3 and gains flying until end of turn. Untap it.

Battle Cry

Untap all white creatures you control.
Whenever a creature blocks this turn, it gets +0/+1 until end of turn.

Ahn-Crop Champion

You may exert Ahn-Crop Champion as it attacks. When you do, untap all other creatures you control. (An exerted creature won't untap during your next untap step.)

Blessed Alliance

Escalate {2} (Pay this cost for each mode chosen beyond the first.)
Choose one or more —
• Target player gains 4 life.
• Untap up to two target creatures.
• Target opponent sacrifices an attacking creature of their choice.

Roar of the Kha

Choose one —
• Creatures you control get +1/+1 until end of turn.
• Untap all creatures you control.
Entwine {1}{W} (Choose both if you pay the entwine cost.)

Saryth, the Viper's Fang

Other tapped creatures you control have deathtouch.
Other untapped creatures you control have hexproof.
{1}, {T}: Untap another target creature or land you control.

Sudden Spinnerets

Target creature gets +1/+3 until end of turn. Put a reach counter on it. Untap it.

Village Bell-Ringer

Flash (You may cast this spell any time you could cast an instant.)
When Village Bell-Ringer enters, untap all creatures you control.

Ardenvale Fealty

Create a 2/2 white Knight creature token with vigilance. (Then exile this card. You may cast the enchantment later from exile.)

Virtue of Loyalty

At the beginning of your end step, put a +1/+1 counter on each creature you control. Untap those creatures.

Virtue of Loyalty // Ardenvale Fealty

Refuse to Yield

Target creature gets +2/+7 until end of turn. Untap it.

Light the Way

Choose one —
• Put a +1/+1 counter on target creature or Vehicle. Untap it.
• Return target permanent you control to its owner's hand.

Instill Energy

Enchant creature
Enchanted creature can attack as though it had haste.
{0}: Untap enchanted creature. Activate only during your turn and only once each turn.

Stony Strength

Put a +1/+1 counter on target creature you control. Untap that creature.

Seedcradle Witch

{2}{G}{W}: Target creature gets +3/+3 until end of turn. Untap that creature.

Burst of Strength

Put a +1/+1 counter on target creature and untap it.

Devout Invocation

Tap any number of untapped creatures you control. Create a 4/4 white Angel creature token with flying for each creature tapped this way.

Join Shields

Untap all creatures you control. They gain hexproof and indestructible until end of turn. (They can't be the targets of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy them.)

Vines of the Recluse

Target creature gets +1/+2 and gains reach until end of turn. Untap it. (A creature with reach can block creatures with flying.)

Arachnoid Adaptation

Target creature gets +2/+2 and gains reach until end of turn. Untap it.

To Arms!

Untap all creatures you control.
Draw a card.

Ornamental Courage

Untap target creature. It gets +1/+3 until end of turn.

Wings of the Cosmos

Sparring Mummy

When Sparring Mummy enters, untap target creature.

Seeker of Skybreak

Cacophodon

Enrage — Whenever Cacophodon is dealt damage, untap target permanent.

Blinding Beam

Choose one —
• Tap two target creatures.
• Creatures don't untap during target player's next untap step.
Entwine {1} (Choose both if you pay the entwine cost.)

Reveille Squad

Whenever one or more creatures attack you, if Reveille Squad is untapped, you may untap all creatures you control.

Mobile Garrison

Whenever Mobile Garrison attacks, untap another target artifact or creature you control.
Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Leaping Ambush

Target creature gets +1/+3 and gains reach until end of turn. Untap it.

Sparring Regimen

When Sparring Regimen enters, learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)
Whenever you attack, put a +1/+1 counter on target attacking creature and untap it.

Sting, the Glinting Dagger

Equipped creature gets +1/+1 and has haste.
At the beginning of each combat, untap equipped creature.
Equipped creature has first strike as long as it's blocking or blocked by a Goblin or Orc.
Equip {2}

Mobilize

Bazaar Krovod

Whenever Bazaar Krovod attacks, another target attacking creature gets +0/+2 until end of turn. Untap that creature.

Civic Gardener

Whenever Civic Gardener attacks, untap target creature or land.

Hope and Glory

Untap two target creatures. Each of them gets +1/+1 until end of turn.

Lulu, Loyal Hollyphant

Flying
At the beginning of your end step, if a permanent you controlled left the battlefield this turn, put a +1/+1 counter on each tapped creature you control, then untap them.
Choose a Background (You can have a Background as a second commander.)

Reconnaissance

{0}: Remove target attacking creature you control from combat and untap it. (If you activate during end of combat, the creature will untap after it deals combat damage.)

Rally of Wings

Untap all creatures you control. Creatures you control with flying get +2/+2 until end of turn.

White Plume Adventurer

When White Plume Adventurer enters, you take the initiative.
At the beginning of each opponent's upkeep, untap a creature you control. If you've completed a dungeon, untap all creatures you control instead.

Drumbellower

Flying
Untap all creatures you control during each other player's untap step.

Veteran's Reflexes

Target creature gets +1/+1 until end of turn. Untap that creature.

Hyrax Tower Scout

When Hyrax Tower Scout enters, untap target creature.

Beacon Hawk

Flying
Whenever Beacon Hawk deals combat damage to a player, you may untap target creature.
{W}: Beacon Hawk gets +0/+1 until end of turn.

Midnight Guard

Whenever another creature enters, untap Midnight Guard.

Fight

Aftermath (Cast this spell only from your graveyard. Then exile it.)
Target creature you control fights target creature an opponent controls.

Prepare

Untap target creature. It gets +2/+2 and gains lifelink until end of turn.

Prepare // Fight

Call to Glory

Untap all creatures you control. Samurai creatures you control get +1/+1 until end of turn.

Nature's Chosen

Enchant creature you control
{0}: Untap enchanted creature. Activate only during your turn and only once each turn.
Tap enchanted creature: Untap target artifact, creature, or land. Activate only if enchanted creature is white and untapped and only once each turn.

Gustcloak Savior

Flying
Whenever a creature you control becomes blocked, you may untap that creature and remove it from combat.

Seedborn Muse

Untap all permanents you control during each other player's untap step.

Legolas's Quick Reflexes

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Untap target creature. Until end of turn, it gains hexproof, reach, and "Whenever this creature becomes tapped, it deals damage equal to its power to up to one target creature."

Tenth District Veteran

Vigilance
Whenever Tenth District Veteran attacks, untap another target creature you control.

Gauntlets of Light

Enchant creature
Enchanted creature gets +0/+2 and assigns combat damage equal to its toughness rather than its power.
Enchanted creature has "{2}{W}: Untap this creature."