Antimatter + Adrenaline [Not a Bug]

[Da Bird]

Using Antimatter and Adrenaline on creatures with an attack power of higher than three, when compared to using Adrenaline alone, yields some anomalous results.  For example, a creature with an attack power of 4, with Adrenaline, will deal damage three times — 4, 3, and 2.  However, that same creature with both Adrenaline and Antimatter, so that its power is -4, heals three times but for different amounts than would be expected from what the damage figures would suggest — 4,2, and 1.  I have to wonder whether this is the intended behavior of the combo, considering that the damage and healing figures are identical when used on creatures with an attack power of 3 or less.

[Eleahen]

It seems like it's a simple rounding error.
For example - in your case 4, 3, 2 could be 4, 2.5, 1.7. Rounding that up will give you 4, 3, 2.
So, rounding up -4, -2.5, -1.7 will give you -4, -2, -1.

I'm not sure about exact values used for calculation though.

[OldTrees]

For Attack 0 Adrenaline gives 5 attacks at Current Attack (creatures with 0 attack tend to not attack. But see sundial.)
For Attack -3 to -1 and 1 to 3 Adrenaline gives 4 attacks at Current Attack
For Attack -8 to -4 and 4 to 8 Adrenaline gives 3 attacks at Current Attack, 2/3 Current Attack and 1/3 Current Attack
For Attack -15 to -9 and 9 to 15 Adrenaline gives 2 attacks at Current Attack, 1/3 Current Attack

Values are rounded up
4, 8/3, 4/3 -> 4,2.67,1.33 -> 4, 3, 2
-4, -8/3, -4/3 -> -4,-2.67,-1.33 -> -4, -2, -1

[Jenkar]

http://elementscommunity.org/wiki/cards-life/adrenaline-epinephrine/

scroll down, down, down.