Brass Infiniscope + Voltaic Construct + Karn, the Great Creator Combo

Spell with in Mana Cost in hand.

All other permanents on the battlefield (Brass Infiniscope without summoning sickness on the battlefield).

There are legal targets for the spell with in its mana cost, if applicable. You have enough mana to cast the spell with in its mana cost reduced by , accounting for to be 2 or greater if you wish to gain life.

Animate Brass Infiniscope.

Activate Brass Infiniscope by tapping it, adding and creating a delayed triggered ability.

Activate Voltaic Construct by paying , untapping Brass Infiniscope.

Repeat steps 2 and 3 as desired.

Cast the spell with in its mana cost, with being at least 2 if you wish to gain life.

Each instance of Brass Infiniscope's delayed triggered ability triggers, causing you to draw a card and gain half X life, rounded down, for each trigger.

Infinite card draw

Infinite draw triggers

Significant lifegain

Significant lifegain triggers