Attempt to deal damage to an opponent.
The damage is replaced by The Mindskinner, instead causing each opponent to mill that many cards.
Syr Konrad triggers for each creature card put into your graveyard.
Resolve the first trigger, attempting to deal 1 damage to each opponent.
Repeat from step 2.

Near-infinite mill

The Mindskinner

Syr Konrad, the Grim

Cast Body of Research by paying {G}{G}{G}{U}{U}{U}, creating a 0/0 Fractal creature token, then putting a number of +1/+1 counters on it equal to your deck size.
Optionally, give the Fractal token haste, or proceed to your next turn.
Declare the Fractal and The Mindskinner, if desired/able, as attackers.
When the Fractal, and The Mindskinner if it attacked, would deal combat damage to the opponent, The Mindskinner prevents that damage, and causes each opponent to mill that many cards.

Search Results