I just played the card hero.
He has no stopping skill to stop/stun hero.
Just use his attack speed and card skill to kill in group fight.
His first skill = shoot 3 cards hit all units in its path, which is great for hero behind minions
Dr.Mundo is godly once he get great hp regen items.
1st skill = slow hero (though 2s is rather short)
2nd skill = hit all surrouding (e.g. 100 dmg/s to minions while hurting himself 50dmg/s)
but duno what the crowd control % mean
3nd skill = add dmg (a fix dmg plus higher dmg by loss more hp himself) ,
usually used after cast 2nd skill
4th skill = greater hp regen + movement speed => good to attack / escape
1st item = pick hp regen
2nd item = pick slow enemy
3rd and afterwards => hp regen