As an additional cost to cast this spell, tap any number of untapped creatures you control.
Target creature gets +X/+0 and gains first strike until end of turn, where X is the total power of creatures tapped to pay this spell's additional cost.

Approval — Counter target noncreature spell unless its controller pays {X}, where X is the number of colors among permanents you control.

Vicious Backstab deals 5 damage to target creature.
Cycling {1}{R}
When you cycle this card, you may discard a card. If you do, draw a card.

This land enters tapped.
{2}{B}{R}, {T}: Surveil 1.

Choose up to one for each color among black, red, and green among permanents you control.
• Put up to two target nonland cards from graveyards on top of their owners' libraries in any order.
• Exile the top two cards of target player's library. Until the end of your next turn, you may play those cards.
• Target player creates two tapped Treasure tokens.
Exile Vishanki Agenda.

Vishanki District enters tapped unless you control a Swamp, a Mountain, and a Forest.
{T}: Add {B}, {R}, or {G}.

Equipped creature gets +1/+0.
If a source you control would deal noncombat damage to a player while this Equipment is attached to a creature, you may have it deal damage equal to equipped creature's power instead.
Equip {2}

Enchant creature
Enchanted creature gets +1/+0 and can't be blocked.
{5}{U}, Exile Voyage to the Siren Sea from your graveyard or the battlefield: Draw three cards. This ability costs {1} less for each creature you control that dealt combat damage to an opponent this turn.

Whenever this Subroutine runs, draw two cards. Creatures your opponents control get -2/-0 until your next turn.

Target player discards two cards and loses 2 life. If this spell's flashback cost was paid, instead that player discards a card and loses 1 life.
Flashback {B}

Target artifact or creature you control becomes an artifact creature with base power and toughness 5/5 until end of turn.

Mill two cards, then return a creature card from your graveyard to your hand.
Surface {3}{B}

Target creature can't be blocked this turn. If this spell's flashback cost was paid, put a +1/+1 counter on that creature.
Flashback {1}{U}

You gain 4 life. If this spell's flashback cost was paid, draw a card.
Flashback {3}{W}

Choose one —
• Walk the Dead's Path deals 3 damage to target attacking or blocking creature.
• Destroy target enchantment.

Target creature gets +4/-2 until end of turn.

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

{T}: Add {C}.
{T}: Add one mana of any color. If you don't control a Weather, spend this mana only to cast a Weather spell.

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.

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

Flash
This spell costs {X} less to cast, where X is the number of Plains you control plus the number of cards with a cycling ability in your graveyard.
When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.
Plainscycling {2}

You may cast this spell as though it had flash if you activated a nonmana ability this turn.
Target artifact or creature's owner puts it on their choice of the top or bottom of their library.

Destroy target tapped creature.

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