Choose one —
• Draw cards equal to the greatest power among non-Human creatures you control.
• Non-Human creatures you control get +3/+3 until end of turn.

Enchant enchantment
At the beginning of the upkeep of enchanted enchantment's controller, that player may pay any amount of mana. This Aura deals 2 damage to that player. Prevent X of that damage, where X is the amount of mana that player paid this way.

Elves you control have ": Add ."
+1: Put a +1/+1 counter on up to one target Elf. Untap it. It gains deathtouch until end of turn.
0: Create a 1/1 green Elf Warrior creature token.
−6: You get an emblem with "Whenever you cast an Elf spell, it gains haste until end of turn and you draw two cards."

Arwen enters with an indestructible counter on her.
, Remove an indestructible counter from Arwen: Another target creature gains indestructible until end of turn. Put a +1/+1 counter and a lifelink counter on that creature and a +1/+1 counter and a lifelink counter on Arwen.

Commander ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand or the command zone tapped and attacking.)
Whenever a Ninja you control deals combat damage to a player, reveal the top card of your library and put that card into your hand. Each opponent loses life equal to that card's mana value.

Allies — At the beginning of your end step, put a +1/+1 counter on each of up to two other target legendary creatures.
Betrayal — Whenever a legendary creature with counters on it dies, draw a card for each counter on it. You lose 2 life.

+2: Target opponent exiles cards from the top of their library until they exile a nonland card. Until end of turn, you may cast that card without paying its mana cost.
+1: Each opponent exiles two cards from their hand.
−4: Nicol Bolas deals 7 damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.
−12: Exile each nonland permanent your opponents control.

You draw three cards and you lose 3 life.

At the beginning of combat on your turn, put a +1/+1 counter on each of up to two target creatures you control.
, : Double the number of each kind of counter on up to two target creatures and/or artifacts you control.

When this creature enters, you may return target creature card from your graveyard to your hand.

Vigilance, haste
Radar Sense — You may look at the top card of your library any time.
Whenever you attack, you may exile the top card of your library. If that card is a Hero card, Daredevil gets +2/+1 until end of turn. You may play that card this turn.

Return all nonland permanents target player controls to their owner's hand.

Draw cards equal to the greatest mana value among permanents you control.

Undaunted (This spell costs less to cast for each opponent.)
Destroy two target creatures.

: Add .
, : This land becomes a copy of target land, except it has this ability.

(: Add .)

Affinity for creatures (This spell costs less to cast for each creature you control.)
Flying, deathtouch
Instant and sorcery spells you cast have affinity for creatures.

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, Tap three untapped white creatures you control: Destroy target creature.

When you unlock this door, create a token that's a copy of target creature you control, except it's a Reflection in addition to its other creature types.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)