Lore Seeker

Put a +1/+1 counter on target creature. That creature gains indestructible until end of turn.

Aftermath
Tap up to two target creatures your opponents control. Creatures you control gain vigilance until end of turn.

Whenever a creature enters the battlefield this turn, you may draw a card.
Fuse

At the beginning of your upkeep, you may transform Cloistered Youth.

Exile target card from a graveyard.
Draw a card.

Tap target creature.
Draw a card.

Tap up to two target creatures.

{1}{W}: Enforcer Knight gains first strike until end of turn.
Revolution

Counter target multicolored spell.

Return target spell to its owner's hand.

Target creature gets +2/+1 and gains flying until end of turn.

Put a -1/-1 counter on each of up to two target creatures.

At the beginning of your upkeep, if you control four or more creatures, transform Hanweir Militia Captain.

Put target artifact or enchantment on the bottom of its owner's library.

First strike, trample, lifelink

Revolution

Return any number of target permanents you own to your hand.

First strike, lifelink
At the beginning of the end step, if you gained 3 or more life this turn, transform Lone Rider.

Vigilance
When Loyal Cathar dies, return it to the battlefield transformed under your control at the beginning of the next end step.

{T}: Add one mana of any color.
{1}{R}, {T}: Metzali, Tower of Triumph deals 2 damage to each opponent.
{2}{W}, {T}: Choose a creature at random that attacked this turn. Destroy that creature.

[+1]: Until end of turn, each creature you control gets +1/+1 for each permanent attached to it.
[–1]: Create a 1/1 white Minion creature token. You may attach an Aura or Equipment you control to it.
[–6]: Search your library for an Aura or Equipment card and put it onto the battlefield attached to a creature. Repeat this process two more times, then shuffle your library.

When Nahiri, Stoneforge Pupil enters the battlefield, you may search your library for an Equipment card, reveal it, then shuffle your library and put that card on top of it.
When Nahiri deals damage to a player, if she's equipped, exile her, then return her to the battlefield transformed under her owner's control.

Flip a coin. If it comes up heads, counter target instant or sorcery spell. If it comes up tails, copy that spell and you may choose new targets for the copy.

When Path of Mettle enters the battlefield, it deals 1 damage to each creature that doesn't have first strike, double strike, vigilance, or haste.
Whenever you attack with at least two creatures that have first strike, double strike, vigilance, and/or haste, transform Path of Mettle.

Untap target creature. It gets +2/+2 and gains lifelink until end of turn.