Stairs to Infinity

Players have no maximum hand size.
Whenever you roll the planar die, draw a card.
Whenever you roll , reveal the top card of your planar deck. You may put it on the bottom of your planar deck.

Defang

Enchant creature
Prevent all damage that would be dealt by enchanted creature.

Searchlight Geist

Flying
: Searchlight Geist gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Fervent Cathar

Haste
When Fervent Cathar enters the battlefield, target creature can’t block this turn.

Geralf’s Mindcrusher

When Geralf’s Mindcrusher enters the battlefield, target player mills five cards.
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner’s control with a +1/+1 counter on it.)

Gravecrawler

Gravecrawler can’t block.
You may cast Gravecrawler from your graveyard as long as you control a Zombie.

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Mikaeus, the Lunarch

Mikaeus, the Lunarch enters the battlefield with X +1/+1 counters on it.
: Put a +1/+1 counter on Mikaeus.
, Remove a +1/+1 counter from Mikaeus: Put a +1/+1 counter on each other creature you control.

Grimoire of the Dead

, , Discard a card: Put a study counter on Grimoire of the Dead.
, Remove three study counters from Grimoire of the Dead and sacrifice it: Put all creature cards from all graveyards onto the battlefield under your control. They’re black Zombies in addition to their other colors and types.

Evolving Wilds

, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

Mikaeus, the Lunarch

Mikaeus, the Lunarch enters the battlefield with X +1/+1 counters on it.
: Put a +1/+1 counter on Mikaeus.
, Remove a +1/+1 counter from Mikaeus: Put a +1/+1 counter on each other creature you control.

Kiki-Jiki, Mirror Breaker

Haste
: Create a token that’s a copy of target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

Deathmark

Destroy target green or white creature.

Benalish Veteran

Whenever Benalish Veteran attacks, it gets +1/+1 until end of turn.

Stampeding Rhino

Trample (This creature can deal excess combat damage to the player or planeswalker it’s attacking.)

Trollhide

Enchant creature
Enchanted creature gets +2/+2 and has “: Regenerate this creature.” (The next time the creature would be destroyed this turn, it isn’t. Instead tap it, remove all damage from it, and remove it from combat.)

Rampant Growth

Search your library for a basic land card and put that card onto the battlefield tapped. Then shuffle your library.

Evolving Wilds

, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

Relic Crush

Destroy target artifact or enchantment and up to one other target artifact or enchantment.

Dragon Whelp

Flying
: Dragon Whelp gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice Dragon Whelp at the beginning of the next end step.

Grand Architect

Other blue creatures you control get +1/+1.
: Target artifact creature becomes blue until end of turn.
Tap an untapped blue creature you control: Add . Spend this mana only to cast artifact spells or activate abilities of artifacts.