Astral Cornucopia enters with X charge counters on it. {T}: Choose a color. Add one mana of that color for each charge counter on Astral Cornucopia.
Converge — Crystalline Crawler enters with a +1/+1 counter on it for each color of mana spent to cast it. Remove a +1/+1 counter from Crystalline Crawler: Add one mana of any color. {T}: Put a +1/+1 counter on Crystalline Crawler. 1/1
Other Goblins you control get +1/+1. Sacrifice a Goblin: Destroy target artifact. 3/3
Play with the top card of your library revealed. You may cast Goblin spells from the top of your library. As long as the top card of your library is a Goblin card, Conspicuous Snoop has all activated abilities of that card. 2/2
Whenever Headless Rider or another nontoken Zombie you control dies, create a 2/2 black Zombie creature token. 3/1
Decimate — When Legate Lanius enters, each opponent sacrifices a tenth of the creatures they control, rounded up. Whenever an opponent sacrifices a creature, put a +1/+1 counter on Legate Lanius. 2/2
Equipped creature has “{3}, {Q}: This creature gets +2/+2 until end of turn.” ({Q} is the untap symbol.) Equip {0}
Flash You may have Stunt Double enter as a copy of any creature on the battlefield. 0/0
Trample At the beginning of your upkeep, if you control a blue permanent, you may create a token that’s a copy of Mirror-Sigil Sergeant. 4/4
If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.
Destroy target nonblack creature. At the beginning of your next upkeep, pay {2}{B}. If you don’t, you lose the game.
First strike (This creature deals combat damage before creatures without first strike.) Lifelink (Damage dealt by this creature also causes you to gain that much life.) Fiendslayer Paladin can’t be the target of black or red spells your opponents control. 2/2
Field of the Dead enters tapped. {T}: Add {C}. Whenever Field of the Dead or another land you control enters, if you control seven or more lands with different names, create a 2/2 black Zombie creature token.