Choose target creature you control and target creature you don't control. If you cast this spell during your main phase, the creature you control gets +1/+1 until end of turn. Then those creatures fight each other. (Each deals damage equal to its power to the other.)

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Remove two +1/+1 counters from this creature: Regenerate it. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

This creature gets +1/+2 as long as an opponent controls a nonbasic land.

Replicate (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)
Destroy target artifact.

Enchant player
Whenever enchanted player is attacked, create a Gold token. Each opponent attacking that player does the same. (A Gold token is an artifact with "Sacrifice this token: Add one mana of any color.")

Haste
Equipped creature gets +1/+1 and has haste.
Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Flying (This creature can't be blocked except by creatures with flying or reach.)
: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

: Target creature you control gains protection from the color of your choice until end of turn.

At the beginning of your upkeep, you gain 1 life.
, Sacrifice this artifact: Draw a card.

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Draw four cards, then choose X cards in your hand and discard the rest.

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

Lightning Bolt deals 3 damage to any target.

When this creature enters, each opponent loses 1 life and you gain 1 life.
Sacrifice a Food: Return this card from your graveyard to the battlefield.

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to that card's mana value.

Counter target spell unless its controller pays . Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

When this artifact enters, exile target nonland permanent an opponent controls with mana value 2 or less until this artifact leaves the battlefield.

Destroy target artifact you don't control.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

X target blocked creatures assign their combat damage this turn as though they weren't blocked.

Return target artifact or enchantment card from your graveyard to your hand.

Destroy target creature if it has mana value 2 or less.
Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent left the battlefield under your control this turn.

Equipped creature gets +2/+1.
Equip

Blaze deals X damage to any target.

As an additional cost to cast this spell, sacrifice a Goblin.
Goblin Grenade deals 5 damage to any target.

Target player reveals their hand. You choose a nonland card from it with mana value 3 or less. That player discards that card.

, Pay 2 life: Return target creature card from your graveyard to your hand.

Defender (This creature can't attack.)
As long as this creature is enchanted or equipped, it can attack as though it didn't have defender.

(Gain the next level as a sorcery to add its ability.)
If you would gain life, you gain that much life plus 1 instead.
: Level 2
Whenever you gain life, put a +1/+1 counter on target creature you control.
: Level 3
When this Class becomes level 3, return target creature card from your graveyard to the battlefield. You gain life equal to that creature's toughness.

Look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

When this creature enters or dies, mill three cards. (Put the top three cards of your library into your graveyard.)

As this creature enters, choose another creature you control.
Sacrifice this creature: The chosen creature gains indestructible until end of turn.

Enchant Plains
: Until end of turn, enchanted Plains becomes a 2/5 white Spirit creature with "Whenever this creature deals damage, its controller gains that much life." It's still a land.
When enchanted Plains is put into a graveyard, you may return this card from your graveyard to your hand.

Deathtouch

This creature gets +1/+2 as long as you control a Forest.

Target spell or permanent becomes the color of your choice until end of turn.

(Gain the next level as a sorcery to add its ability.)
You have no maximum hand size.
: Level 2
When this Class becomes level 2, draw two cards.
: Level 3
Whenever you draw a card, put a +1/+1 counter on target creature you control.