msem-instigator

Whenever you cast a spell that targets, put a loyalty counter on Valeri Kripac and create a 1/1 white Soldier creature token.
[+1]: Add {R}. If you spend this mana on a spell that targets, that spell can't be countered.
[–2]: Exile target instant or sorcery card from your graveyard. You may play it until the end of your next turn. If you do, exile that spell instead of putting it anywhere else.

Vampiric Vice deals 3 damage to target creature or planeswalker. Vampiric Vice also deals 2 damage to that permanent's controller if you control a Vampire.

Vanguard's Assault deals X damage divided as you choose among any number of target creatures, where X is the number of attacking creatures.

Destroy target artifact. Vanquish the Obsolete deals 1 damage to each creature that artifact's controller controls.

Vaporizing Blast deals 3 damage to target creature. If that creature has a permanent attached to it, instead Vaporizing Blast deals 7 damage to that creature and 2 damage to that creature's controller.

Trample
When Varagan Packmaster enters, create a Treasure token, then exile the top card of your library. Until the end of your next turn, you may play that card.

Flying, haste
{R}: Varagan Wyrmling gets +1/+0 until end of turn. Activate this ability only up to three times each turn.

Menace
At the beginning of your end step, if Vartrossen Vandals didn't attack this turn, transform it.

Enchant creature
Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
Enchanted creature gets +3/+0 and has menace.

Whenever Veiled Charmer attacks, target creature blocks it this turn if able.

Whenever a creature you control dies, Vengeant Souls deals 1 damage to any target.

Whenever another creature you control dies, creatures you control get +1/+0 until end of turn.
Whenever this creature attacks, you may pay {2}{R} and sacrifice another creature. If you do, this creature gains menace until end of turn.

Target creature gets +2/-2 and gains first strike until end of turn.

Verse of Fire deals 2 damage divided as you choose among up to two targets.

Menace

When Viashino Glutton enters, you may have it consume. If you do, create two 1/1 red Goblin creature tokens. (To consume, sacrifice another creature or exile a creature card from your graveyard.)

As an additional cost to cast this spell, exile a multicolored card from your graveyard or pay {2}.
Vibrant Flames deals 3 damage to any target.

When Vicious Shamshir enters, you may attach it to target creature you control. If you do, target creature can't block this turn.
Equipped creature gets +2/+0.
Equip {3}

Winnow (Damage dealt to this creature also causes you to lose that much life.)
Whenever Vicious Slasher attacks, target creature gains winnow until end of turn.

As an additional cost to cast this spell, you may pay {1}{R}.
Put a double strike counter on target creature you control.
If this spell's additional cost was paid, untap each creature you control that attacked this turn instead. After this main phase, there is an additional combat phase followed by an additional main phase.

Flying, haste
Whenever Vidal's Conjurant attacks, reveal the top six cards of your library. You may put an enchantment card with mana value 3 or less from among them onto the battlefield. If you do, sacrifice that enchantment at the beginning of the next end step. Put the rest on the bottom of your library in a random order.

Haste
When Vidal enters, reveal cards from the top of your library until you reveal an enchantment card with mana value 3 or less. Put that card onto the battlefield and the rest on the bottom of your library in a random order. Sacrifice that enchantment at the beginning of the next end step.

Exile the top two cards of your library and put a blood counter on each of them. Until the end of your next turn, you may play cards you own in exile with blood counters on them.
Tether (Then if you cast this from your hand, you may exile it tethered to a creature you control. When it dies, you may cast this from exile without paying its mana cost.)

Whenever you attack, create an X/X red Elemental creature token that's tapped and attacking, where X is the number of attacking creatures.
Fleeting {1}{R} (You may cast this spell for its fleeting cost. If you do, sacrifice it at the beginning of the next end step.)

Rhapsody {3}{R}{R} (Pay {3}{R}{R} to cast this as a 4/4, or as a sorcery to make it become a 4/4.)
Whenever Vindictive Guardian or another creature you control enters, if that creature's power is 4 or greater, create a Treasure token.