Scrounge pairs an immediate Program-recursion (install from heap) with an “eventual” recursion (bottom from heap), under a non-interactive condition (spending an extra [click] is kinda like making a “non-taxing, auto-succeeding run”).

Design

Doesn't force a shuffle (which saves time). You can still trigger a shuffle if you want to draw it sooner (like by Boomerang), or even tutor for it immediately (like with Mutual Favor or Muse).

Doesn't require a run (unlike NSG's Katorga Breakout, versus FFG's Déjà Vu); but it is a Double, cannot recur Events, and so on.

While “undertucking” (IE. Add 1 _ from your heap to the bottom of your stack.) is frequently irrelevant, it is more relevant in Netrunner than most card games. Which (in a Core set like Elevation), can clue in newer players about how your deck-count changes during gameplay: the rate of card flow, the importance/presence of recursion, and so on. That is:

• In Dominion–likes (where you redraw a five-card hand every turn, while drawing from smaller decks too), you will reshuffle your discard-pile into your draw-pile every few turns.
• In Magic: the Gathering–likes (where you draw one card at the start your turn like the Corp, but lack any basic-action to draw more, and won't be playing more than a single card a turn from hand anyways), you almost never “bottom out”, with Ashen Epilogue–style recursion being unplayable outside of a minority of archetypes/formats.

Notes

• Can (quasi-)reverse Stavka’s double-destruction.
• Can mitigate a Saisentan.
• At just 1inf/5, it's very splashable into: Criminal (for not getting locked out, if your singleton icebreaker gets Destroyer's/AP'd); and Shaper (for… all your programs, if necessary).
• BTW, if you install a Muse and tuck a Coalescence, does it let you Muse for that same Coalescence ?