Resonance Dice

Random Dice 2

Raises attack speed of same-pip dice; the buff stacks.

In Random Dice 2

Class / type: Magic tree
What it does: Raises attack speed of same-pip dice; the buff stacks.
Notes: English name not yet official (translated from the Asian release). JPGameZ calls it the main co-op 'supporter' (support-role die) and translates it as 強心.

Decks with Resonance

Low-pip Predation

Random Dice 2Unspecified (dealer deck)

Predation / Devour Light Switch Bubble Resonance

Community deck post. No reasoning was given.

Source: gall.dcinside.com

Alignment support

Random Dice 2Co-op support role

Alignment Resonance Growth Ice Adaptation / Adapt

Community support-role deck that buffs the partner. No reasoning was given.

Source: gall.dcinside.com

Other dice

Adaptation / Adapt Alchemy Alignment Atom Blessing Decay / Corruption Doom / Ruin Execution

Sources: oslink.io, w.atwiki.jp, gall.dcinside.com, jpgamez.com