So, I won a game in a draft, as a RW aggro.
On ~turn 25.
With 1 life.
With Makeshift Munitions as my only nonland permanent.
BY ACTIVATING ENCAMPMENT KEEPER'S ABILITY !!!

Uhm. How?

So I'm guessing you activated Encampment Keeper to pump your team to put the opponent at a low life total, after which you sacrificed all of them to Makeshift Munitions for lethal?

That's a lot of jank you're playing, pal.

If Munitions was your only nonland permanent, how did you activate Keeper's ability.

Yep, you got it.

How did I get to 10 mana ? Treasure map.

I was forced to play janky one-drops because I drafted only three two-drops for my aggro deck, because every time I got a two-drop in a pack, that pack also contained a great removal spell for my deck, and I was all like "Sure, I'll get those two-drops later ! It's not like they're scarce or something.

I got a second place on that draft, btw.

And last place when I drafted a semi-constructed playable Grixis Pirates, treasure-splashing Vriska Vraska, Relic Seeker, with THREE Lightning-Rig Crews, TWO Walk the Plank, 7-pick Charging Monstrosaur and reasonable chance to win through Revel in Riches.

People beat me two times by crappy merfolks with Auras while I was sitting on Walk the Plank, and once I was milled out by a blue enchantment.

That mill enchantment can be a real threat out of sideboard. Pirates can have a hard time winning with one-power evasive creatures, especially against a life-gain vampires deck. I usually mark the first and wheel it, then pick the second one in the middle of the pack. They won me a game against a much more powerful five-color-control blue deck by milling their win conditions. I could never win that matchup otherwise.

This is the best thread

So basically you won by randomly shuffling their deck?

I am not sure how the mill enchantment really helps against lifegain vampires either. OK, so you can't win the race because of their lifelink... but you are behind for playing Navigator's Ruin.... and you need to get in 6-7 Raid triggers to actually win. I guess you don't actually need to HIT but you do need safe attacks and also not die to their attacks?

I guess I see this card as being great in a very very narrow slice of games, and it's very hard to predict when these are likely to occur (and be worth a pure 3 mana blank in you deck).

Yes, it's strictly sideboard. And when I do decide to board it in, I prefer to play two copies.

A five-color good stuff deck needs time to function. They usually have some enablers, some stalling, and some win conditions, and need to deploy these in the right order. So disruption works. You need to be vary if they have a Raise-dead effect, but mostly they won't play their win condition until the late game, and it's very possible to mill it away and leave them unable to win. Plus, nobody expects that. And they usually don't have a fast clock, since their early game is defensive, so you can afford to play the do-nothing card instead of a late drop which won't do anything anyway as their late game is stronger.

Another good home for Navigator's Ruin is the Vampires mirror, where you usually have some 1/1 lifelink tokens you want to attack with anyway, and the life totals can stay near twenty for a long time.

And it might be I'm playing that just because the format is so boring ...