Ob Nixilis, Captive Kingpin | Glaring Fleshraker | Sensei's Divining Top (and one other card)

Cards

Cast
Sensei's Divining Top by paying ({1} magic symbol) .
When
Sensei's Divining Top enters the battlefield,
Reckless Fireweaver triggers.
Holding priority, activate
Sensei's Divining Top's second ability by tapping it, causing you to draw a card and put
Sensei's Divining Top on top of your library.
Resolve the
Reckless Fireweaver trigger, dealing 1 damage to each opponent.
Ob Nixilis triggers, putting a +1/+1 counter on it, and exiling
Sensei's Divining Top from the top of your library with the ability to cast it from exile until your end step.
Cast
Sensei's Divining Top from exile by paying ({1} magic symbol) .
Glaring Fleshraker's first ability triggers, creating a 0/1 Eldrazi Spawn creature token.
When the Eldrazi Spawn enters,
Glaring Fleshraker's second ability trigger. dealing 1 damage to each opponent.
Ob Nixilis triggers, putting a +1/+1 counter on it and exiling the top card of your library with the ability to cast it from exile until your end step.
Activate the Eldrazi Spawn by sacrificing it, adding ({C} magic symbol) .
Repeat from step 2.

Near-infinite damage.
Near-infinite ETB.
Near-infinite storm count.
Near-infinite LTB.
Near-infinite death triggers.
Near-infinite sacrifice triggers.
Near-infinite card draw.
Near-infinite draw triggers.
Near-infinite +1/+1 counters on a creature.
Exile a portion of your library with the ability to play the exiled cards until your end step.

This combo has been estimated to be Exhibition (Bracket 1+).