Whenever a creature or land you control enters, you gain 1 life.
Creatures you control get +1/+1 as long as you have at least 3 life more than your starting life total.

Enchant creature
As long as enchanted creature has flying, each creature you control has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

When Together in Arms enters, create two 1/1 colorless Soldier creature tokens.
You controlled a spell that targeted a creature you controlled this turn.
You controlled an ability that targeted a creature you controlled this turn.

Choose one. If your devotion to white is three or greater, you may choose another. The same is true for devotion to black.
• Each opponent loses 4 life and you gain 4 life.
• Destroy all creatures with mana value 3 or less.
• Return up to two creature cards from your graveyard to your hand.

Return any number of target creature cards with total mana value twice X or less from your graveyard to the battlefield. They're artifacts in addition to their other types.

Destroy target tapped creature. If its power was 3 or less, you gain 3 life.
Create a Weapon token.

When Cairnblade of the Ancients enters, destroy target creature an opponent controls.
Equipped creature gets +4/+2 and has vigilance.
Equip {4}

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated unless they're mana abilities.
Enchanted creature has “At the beginning of your upkeep, you lose 1 life.”

When Elder Soulblade enters, search your library and/or graveyard for a creature card with mana value 2 or less. Put that card onto the battlefield, attach Elder Soulblade to it. If you searched you library this way, shuffle.
Equipped creature gets +3/+1 and has menace.
Equip {5}

Create three 1/1 colorless Cyborg artifact creature tokens, then you gain 1 life for each artifact you control. Each opponent loses that much life.

This spell can't be countered.
Destroy target nonland permanent.

Nobles you control get +1/+1 and have ward {1}.
{B}{W}: Level 2
When this Class becomes level 2, you may search your library for a Noble card, reveal it, put it into your hand, then shuffle.
{1}{B}{W}: Level 3
When this Class becomes level 3, each opponent loses 3 life and you gain 3 life.

At the beginning of combat on your turn, you gain 1 life. If you control three or more Shrines, instead you gain 3 life.

Indestructible
Whenever a player attacks with two or more creatures, you draw a card and you create a Treasure token.
Whenever a player casts their second spell each turn, create a 1/1 colorless Cyborg artifact creature token, then put a +1/+1 counter on each Cyborg you control.

As Top of the Charts enters, choose a mana value.
Creatures with the chosen mana value get +1/+1. All other creatures get -1/-1.

{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.

Gain control of target permanent. Untap it. It gains haste until end of turn.

Search your library for a noncreature, nonland card not named Get Your Wish, reveal it, put it into your hand, then shuffle.
You may cast a spell with mana value X or less from your hand without paying its mana cost, where X is the number of colors among permanents you control.

Choose one. If your devotion to blue is three or greater, you may choose another. The same is true for devotion to red.
• Return target sorcery card from your graveyard to your hand.
• Return target nonland permanent to its owner's hand.
• Destroy target artifact.

Attacking creatures you control have first strike.
Whenever you amp it up, draw a card.

Target opponent discards their hand, then draws seven cards. You discard your hand, then exile the top seven cards of that player's library. You may play those cards as long as they remain exiled, and mana of any type can be spent to cast them.

Search your library for a card with flashback and exile it, then shuffle. You may cast that card this turn. At the beginning of your next end step, if that card is in exile, put it into your graveyard.
Flashback {U}{R}

At the beginning of combat on your turn, discard a card, then draw a card. If you control three or more Shrines, instead discard a card, scry 2, then draw a card.

Exile the top four cards of target opponent's library. Until the end of your next turn, you may play two of those cards, and mana of any type can be spent to cast them.

{1}, Exile a permanent card from your graveyard: Surveil 2.
{2}, Exile two permanent cards from your graveyard: Draw a card.
{5}, Exile five permanent cards from your graveyard: Exchange your hand and graveyard.