Pebbles Reroll Comp Guide [Set 18]

Open Builder

Pebbles Reroll

1-Cost Reroll

Augment Setup

Econ

Item

Combat

Riftbeast Opener

Formula

Example

Lvl8

Traits

Invoker

2 > 3 > 4 > 5

Caustic

Emerald Aspect

Old Growth

Riftbeast

3 > 5 > 7 > 10

Juggernaut

2 > 4 > 6

Vanguard

2 > 4 > 6

Adaptor

2 > 3 > 4

Coven

3 > 4 > 5 > 7

Sprykin

3 > 5 > 7

Comp Variations

Flex

Lvl8

Tips & Tricks

While you can play around 5 Riftbeast for the shops before hitting Pebbles 3, the best endgame board appears to be 5 Invoker which helps Pebbles go infinite.
This comp can use many tears, so always almost always prioritize them on Carousel.
Pebbles needs ~17.1 Mana Regen (round up to 18) + Alpha Mark to go infinite. Going infinite does not look mandatory, but it is worth noting. Double mana allows for Sentinel Alpha Mark and can still go infinite (need 2 Sentinel casts with 21 regen+).
If you build double mana on Pebbles (Blue + Blue or Blue + Adaptive), the last item really wants to be Rabadon's or Pebbles will not do enough damage.
Alpha Mark is not solved for this line. Current theory I have is this: Below 17 mana regen use it on Sentinel or Scuttle. Between 17 and 20 use on Pebbles for infinite cast. From 21 to 23, use on Sentinel for infinite cast + teamwide regen. It's possible Scuttle is always better.
All the mana values mentioned here are for 70 Max Mana and 35% Mana Drain per second, so verify against Pebble's tooltip in case these tips go out of date.

Strong Conditions

+3 Tier Conditions →

+2 Tier Conditions →

+1 Tier Conditions →

Economy Strategy

Do not spend gold on leveling this stage. If you have 2-stars and a good item, you can consider playing to win some rounds. Otherwise lose streak is common for stage 2.
Roll to 33 gold, buying any unit that will be part of the level 4 or 5 board. You can also buy units that will be part of the level 6+ board, but you can sell those if your bench fills and you need to buy other units. Rolling to 33 gold is advisable because it allows you to save back up to 50g by 3-5.
Do not level if you haven't hit your 3-star 1-costs yet. If you have your 3-stars, you generally should still stay level 5 if you can win or if leveling to 6 would put you below 20g. Try to get above 40g this round.
Ideally above 50g, level 5 at this point or level 6 with 3-stars.
If you haven't hit your 3-stars yet, roll to ~52g each turn. You don't want to roll to perfect 50g as any units you buy in shop will put you below 50g. If you have 8+ copies of an itemized 1-cost, you can roll to 40g or 30g every round instead. Level to 6 once you hit your 3-stars.
If you haven't hit your 3-stars yet, you must roll until you hit them. You should level to 6 after hitting. In some rare games, you will miss or spend so much gold you can never catch up. These games will usually result in bottom 4 placements.
Level to 7 if you can stay above ~20g. Otherwise stay level 6.
Level to 7.
Level to 8 if you are in bottom half of lobby HP and are losing rounds. If you are higher HP and feel stable, you can wait until next turn.
Level to 8 if you haven't already. Roll for any remaining units necessary for the comp. If stable, you can try to go 9. Most games you will end on level 8.
Level to 9 whenever possible. This is rare, but can happen in the games you have a chance of winning.