See Optimistic Rummager.

Umm, the first effect replaces the second's draw - how do the two effects interact exactly?

This wouldn't be a problem at all if you had the second effect work like with Dark Confidant, where the card is actually just put into your hand - so it wouldn't trigger the replacement effect. What's your intent here - is the second ability specifically meant to interact with the replacement effect and if so, then how? I kinda assume this is just a wording mishap since you also use the word "draw" strangely to referring to recurring the card in the replacement effect.

It's intentional that they interact. I'm trying to demonstrate how my new template of using the word "draw" for impulse effects can be used. In this case, you look at the top two cards of your library; mill one of them; reveal the other; lose life equal to its mana value; and put it into your hand

Erm, I suppose using "draw" in that manner would work. Hs uses the word for a lot of thing from what I recall.

The thing with the replacement effect chaining into the reveal is that it sorta works logically for this particular interaction, but A) what if the replacement effect replaced the draw with an effect that would omit the card draw wholly? Prolly you wouldn't lose any life.

B) How about if the replacement effect was "If you would draw a card, return a card from your graveyard to your hand instead"? Would you lose life equal to that card's mana value or not? If you don't lose life, then what's the exact differentiator between replacement effects where that draw still counts as a draw? Is it any effect that still results in a draw?

C) What if the replacement effect is "If you would draw a card, draw two cards instead"? D) What if the replacement effect states "If you would draw a card, instead look at the top four cards of your library, then draw two of them at random"? Would you lose any life and how much?

1. If you replace a draw with something that doesn't draw a card, e.g. Words of Wilding, then there's no card to reveal and you don't lose life

2. This template leans a bit on snappy wording that works intuitively in most cases. The comp rules entry should define this a bit more strictly, perhaps as "When an effect instructs you to 'draw a card and reveal it,' you reveal the card drawn with that effect." In this case, if you replace the draw with something that puts a card in your hand but isn't a draw, then you don't reveal it and you don't lose life

3. Ignoring the first ability, you would simply draw two cards, reveal both, and lose life for each mana value revealed. Combined with the first replacement effect, you do the "look at top two cards, put one in your hand, and lose life equal to its mana value" effect twice

4. In an ideal world, that kind of template would also get errata to be worded like this one and use the word "draw." If that exact ability is in play, then you would choose the order to apply the replacement effects. If the last one applied still has you drawing a card, then you reveal it and lose life (as in A)

🤔🤔🤔🤔🤔 I suppose?