mtg.wtf

Rolling Thunder deals X damage divided as you choose among any number of targets.

Improvise
Reveal the top X cards of your library. You may put any number of artifact cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.

You gain twice X life. Put Sanguine Sacrament on the bottom of its owner's library.

Savage Twister deals X damage to each creature.

Double strike
Savageborn Hydra enters the battlefield with X +1/+1 counters on it.
{1}{R/G}: Put a +1/+1 counter on Savageborn Hydra. Activate only as a sorcery.

As an additional cost to cast this spell, discard X land cards.
Destroy X target lands.

Look at the top X cards of target opponent's library. Exile one of those cards and put the rest back on top of that player's library in any order.

Pitch the titles of up to X holiday-themed sequels to target spell. Copy that spell for each title pitched, except the copy has that name. You may choose new targets for the copies. (Simply adding numbers isn't festive enough.)

Create X 1/1 white Warrior creature tokens.

Return X target creatures of the creature type of your choice to their owner's hand.

Prevent all combat damage X target creatures would deal this turn.

Return X target creature cards from your graveyard to your hand. You lose X life.

Shatterskull Smashing deals X damage divided as you choose among up to two target creatures and/or planeswalkers. If X is 6 or more, Shatterskull Smashing deals twice X damage divided as you choose among them instead.

Defender
Shifting Wall enters the battlefield with X +1/+1 counters on it.

You may exile a white card with mana value X from your hand rather than pay this spell's mana cost.
The next X damage that a source of your choice would deal to you and/or creatures you control this turn is dealt to any target instead.

Flying, haste
Shivan Devastator enters the battlefield with X +1/+1 counters on it.

You may exile a black card with mana value X from your hand rather than pay this spell's mana cost.
Target creature gets -X/-X until end of turn.

Sigil of Distinction enters the battlefield with X charge counters on it.
Equipped creature gets +1/+1 for each charge counter on Sigil of Distinction.
Equip—Remove a charge counter from Sigil of Distinction.

Put a +1/+1 counter on each of up to X target creatures you control.
Auras, Equipment, and modified creatures you control gain hexproof until end of turn.

You may cast Silver Scrutiny as though it had flash if X is 3 or less.
Draw X cards.

As an additional cost to cast this spell, exile X cards from your graveyard.
You draw X cards and you lose X life.

Flying
Converge — Skyrider Elf enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.

Each player draws X cards.
Forecast — {2}{U}, Reveal Skyscribing from your hand: Each player draws a card.

This spell can't be countered.
Target creature gets -X/-X until end of turn.

Create an X/X green Ooze creature token.