This creature has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.): Add one mana of any color.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)When Shriekmaw enters, destroy target nonartifact, nonblack creature.Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
Whenever equipped creature attacks, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped.Equip (: Attach to target creature you control. Equip only as a sorcery.)
You may choose not to untap Immovable Rod during your untap step.Whenever Immovable Rod becomes untapped, venture into the dungeon., : For as long as Immovable Rod remains tapped, another target permanent loses all abilities and can't attack or block.
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)When Acidic Slime enters, destroy target artifact, enchantment, or land.
Flash (You may cast this spell any time you could cast an instant.)Enchant creatureEnchanted creature gets +1/+1.Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)
Roll two d4 and choose one result. Create a number of 3/3 green Beast creature tokens equal to that result. Then search your library for a number of basic land cards equal to the other result, put them onto the battlefield tapped, then shuffle.
FlyingWhenever Fiend of the Shadows deals combat damage to a player, that player exiles a card from their hand. You may play that card for as long as it remains exiled.Sacrifice a Human: Regenerate Fiend of the Shadows.
, Roll a d8: Monstrosity X, where X is the result. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)Berserk — When Clay Golem becomes monstrous, destroy target permanent.
, Sacrifice a creature: Exile the top card of your library. You may play that card this turn. (You still pay its costs. You can play a land this way only if you have an available land play remaining.)
Path of Ancestry enters tapped.: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Return target creature card from your graveyard to the battlefield.Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Enchant creatureEnchanted creature gets +2/+2 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)Whenever enchanted creature attacks, you scry 2.
Exile target creature. You draw cards equal to that creature's power. At the beginning of your next upkeep, return that card to the battlefield under its owner's control. If you do, discard cards equal to that creature's toughness.
Flying: Skyship Stalker gets +1/+0 until end of turn.: Skyship Stalker gains first strike until end of turn.: Skyship Stalker gains haste until end of turn.
Enchant creature an opponent controlsWhen enchanted creature dies, exile cards equal to its power from the top of its owner's library. You may cast spells from among those cards for as long as they remain exiled, and mana of any type can be spent to cast them.
Target player sacrifices a creature of their choice. You gain life equal to that creature's toughness.Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)
: Add .: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.: Target Assembly-Worker creature gets +1/+1 until end of turn.