//id,range,hit,inf,element,nk,splash,max,list_num,castcancel,cast_defence_rate,inf2,maxcount,skill_type,blow_count,inf3,name,description
// 01 ID
// 02 range (combo skills do not check for range when used,
// if range is < 5, the skill is considered melee-range)
// 03 hit (8- repeated hitting, 6- single-hit)
// 04 inf (0- passive, 1- enemy, 2- place, 4- self, 16- friend, 32- trap)
// 05 element (0 - neutral, 1 - water, 2 - earth, 3 - fire, 4 - wind, 5 - poison,
// 6 - holy, 7 - dark, 8 - ghost, 9 - undead, -1 - use weapon element
// -2 - use endowed element, -3 - use random element.)
// 06 nk (skill damage properties):
// 0x01 - No damage skill
// 0x02 - Has splash area
// 0x04 - Damage should be split among targets
// 0x08 - Skill ignores caster's % damage cards (misc type always ignores)
// 0x10 - Skill ignores elemental adjustments
// 0x20 - Skill ignores target's defense (misc type always ignores)
// 0x40 - Skill ignores target's flee (magic type always ignores)
// 0x80 - Skill ignores target's def cards
// 07 splash/effect range (-1 for screen-wide)
skill_db.txt
490,9,8,1,-1,0x60,0,10,1:2:3:4:5:6:7:8:9:10,yes,0,0,0,misc,0,0x0, CR_ACIDDEMONSTRATION,Acid Demonstration
seems its already ignore hydra card, but for thara add 0x80 , so 0x60 + 0x80 = 0xE0 or even maybe 0xE8
A = 10 | B = 11 | C = 12 | D = 13 | E = 14 | F = 15