Collectish

Creature — Zombie

This creature enters with a +1/+1 counter on it for each creature card in your graveyard. When this creature enters, exile all creature cards from your graveyard.

Enchantment — Aura

Enchant zone (Battlefield, command, exile, and stack are shared zones. Each player has their own graveyard, hand, and library zones.) Whenever one or more cards enter or leave enchanted zone, Zone of Flame deals 1 damage to each opponent. (Tokens aren't cards.)

Creature — Boar Rhino

When this creature leaves the battlefield, create a Mutagen token. (It's an artifact with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")

Artifact Creature — Robot

{T}: Add {R}. {6}{R}: Target creature you control gets +4/+0 until end of turn. Activate only as a sorcery.

Legendary Creature — Phyrexian Horror

Reach At the beginning of each combat, double the power and toughness of each creature you control until end of turn. {G/P}{G/P}, Sacrifice two other creatures: Put an indestructible counter on Zopandrel. ({G/P} can be paid with either {G} or 2 life.)

Creature — Human Rogue Ally

Whenever this creature or another creature you control dies, each opponent loses 1 life and you gain 1 life.

Creature — Human Warrior

Level up {4} ({4}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-2 3/3 LEVEL 3+ 5/5 This creature can't be blocked except by black creatures.