Dream Tides

Creatures don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player may choose any number of tapped nongreen creatures they control and pay {2} for each creature chosen this way. If the player does, untap those creatures.

Serra Angel

Winter Orb

As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.

Loxodon Gatekeeper

Artifacts, creatures, and lands your opponents control enter tapped.

Mana Short

Tap all lands target player controls and that player loses all unspent mana.

Arcum's Whistle

{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that mana value. If they don't pay, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate only before attackers are declared.

Nightguard Patrol

Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Hussar Patrol

Flash (You may cast this spell any time you could cast an instant.)
Vigilance

Zephyr Falcon

Yotian Soldier

Blinding Light

Stasis

Players skip their untap steps.
At the beginning of your upkeep, sacrifice Stasis unless you pay {U}.

Twiddle

You may tap or untap target artifact, creature, or land.

Loxodon Stalwart

Vigilance
{W}: Loxodon Stalwart gets +0/+1 until end of turn.

Icy Manipulator

{1}, {T}: Tap target artifact, creature, or land.

Plains

Court Hussar

Vigilance
When Court Hussar enters, look at the top three cards of your library, then put one of them into your hand and the rest on the bottom of your library in any order.
When Court Hussar enters, sacrifice it unless {W} was spent to cast it.

Tempest Drake

Island

Sunblast Angel

Flying
When Sunblast Angel enters, destroy all tapped creatures.

Kismet

Trade Caravan

At the beginning of your upkeep, put a currency counter on Trade Caravan.
Remove two currency counters from Trade Caravan: Untap target basic land. Activate only during an opponent's upkeep.

Blustersquall

Tap target creature you don't control.
Overload {3}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")