Helga, Skittish Seer + Mind Over Matter + Hoverguard Sweepers Combo

Hoverguard Sweepers in hand.

Helga and Mind Over Matter on the battlefield.

Helga does not have summoning sickness and has power 8 or greater.

Activate Helga by tapping it, adding at least eight that can only be spent to cast creature spells with mana value 4 or greater or creature spells with in their mana cost.

Cast Hoverguard Sweepers by paying .

Helga triggers, causing you to draw a card, gain 1 life and put a +1/+1 counter on Helga.

When Hoverguard Sweepers enters the battlefield, it triggers, returning itself from the battlefield to your hand.

Activate Mind Over Matter by discarding a card, untapping Helga.

Repeat.

Infinite self-discard triggers

Significant lifegain

Significant lifegain triggers

Significant creature ETB

Infinite draw triggers

Infinite looting

Significant storm count

Significant creature LTB

Significant untap of permanents you control

Significant +1/+1 counters on a creature

Significant colored mana that can only be spent to cast creature spells with mana value 4 or greater or creature spells with X in their mana cost

Significant mana permanents you control can produce

Return a portion of target creatures to their owner's hand