Atraxa's Skitterfang enters the battlefield with three oil counters on it.

At the beginning of combat on your turn, you may remove an oil counter from Atraxa's Skitterfang. When you do, target creature you control gains your choice of flying, vigilance, deathtouch, or lifelink until end of turn.

Deathtouch

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Whenever Chainflail Centipede or equipped creature attacks, it gets +2/+0 until end of turn.

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

, Exile Halo Scarab from your graveyard: Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Flying

Reach

When Kraul Whipcracker enters the battlefield, destroy target token an opponent controls.

Lattice-Blade Mantis enters the battlefield with two oil counters on it.

Whenever Lattice-Blade Mantis attacks, you may remove an oil counter from it. If you do, untap it and it gets +1/+1 until end of turn.

Flying

Necrosquito enters the battlefield with two oil counters on it.

Necrosquito gets +1/+1 for each oil counter on it.

Whenever another creature or artifact you control is put into a graveyard from the battlefield, put an oil counter on Necrosquito.

When Primordial Gnawer dies, discover 3. (Exile cards from the top of your library until you exile a nonland card with mana value 3 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Spring-Leaf Avenger deals combat damage to a player, return target permanent card from your graveyard to your hand.

When Virus Beetle enters the battlefield, each opponent discards a card.