{T}, Sacrifice Warpway Rings: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Approval — When Warrant-Borne Cop enters, target player reveals X cards from their hand, where X is the number of colors among permanents you control. You choose one of them. That player discards that card.

{T}: Add {C}.
Whenever Wasted Watchpost deals combat damage to a player, you may sacrifice it. When you do, destroy target nonbasic land that player controls.
Spellcharge 3

Once each turn, when you cast an instant or sorcery spell, you may create a 1/0 blue Elemental creature token.
Elementals you control get +1/+1.
{2}{U}, Sacrifice an Elemental: Tap up to one target creature. Scry 1.

Artifact spells you cast cost {1} less to cast.
Whenever Waveform Harnessing Unit or another artifact you control enters, target creature gets +1/+1 and gains lifelink until end of turn.

{T}: Target land you control becomes the basic land type of your choice until end of turn.
{2}{U}, {T}: Draw a card, then discard a card. This ability costs {2} less to activate if you control four or more lands with different names.

Trample
Drop — When Wavelength Synchronizer enters, if you didn't cast any creature spells during your last turn, you gain 4 life.

Ward—Pay 8 life.
You may have Wayward Coalescence assign its combat damage as though it weren't blocked.

When Wayward Drek enters, create a 1/1 colorless Cyborg artifact creature token.
Cybersoul {3}{W/B}

{1}, Sacrifice Wealthy Clergyman: Another target creature you control gains hexproof and indestructible until end of turn. If that creature is a Noble, put a +1/+1 counter on it.

Lifelink
When Weathered Blackguard enters, you may attach target Equipment you control to it.
Wander {2}{B}

Reveal the top three cards of your library. You may put a creature, enchantment, or land card from among them into your hand and the rest on the bottom of your library in any order.

Creatures your opponents control get -1/-0.
Spellcharge 5

{2}, {T}, Pay 1 life: Target permanent becomes an artifact in addition to its other types until end of turn.
Pay 1 life, Sacrifice Welding Rig: Target artifact gains indestructible until end of turn.

Flying
When Whipwing Dragonfly enters, you gain 2 life.

Flash
Flying
When Whirring Inspector enters, target player reveals their hand. You may exile a nonland card from among them until your next turn. When you don't, exile up to one target nonland permanent that player controls until your next turn.

{1}{B}: Search your library for a card named Whisper Squad, put it onto the battlefield tapped, then shuffle.

At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, creatures you control get +1/+1 and gain trample until end of turn.

At the beginning of your end step, you gain 1 life.
Whitecliff Guardian gets +0/+1 for each 1 life you have above your starting life total.

Whenever a creature entering the battlefield under your control causes an ability of a permanent you control to trigger, draw a card. This ability triggers only once each turn.

Create X 1/1 white Insect creature tokens with flying.
Flashback—{3}{W}{W}, Tap X untapped creatures you control.

Whenever another creature dies, if it had one or more counters on it, you may put one of those counters on Wicked Steed.

When Widowed Maiden enters, return target creature card from your graveyard to your hand.
Spellcharge 3

Menace
When Wildcaster Ogre enters, exile an instant or sorcery card from your graveyard at random. You may cast a copy of that spell without paying its mana cost.