Summon Area
The area of summon is a distance of two squares. This means an area of 5x5 squares around the mage. You can not summon a unit inside the "summon area" of the other mage/boss.
In the latest version, the area where you cannot summon units has been reduced by 1 square from other mage/boss summoning areas.

When no boss is on the level(Single player mode), His units can be summoned in any random square of the board (first squares not threatening players units are considered, then if there are none available, can be any square of the board).

Spells Area
Spell works in area (7x7), except fireball that works in a straight line, until some tree blocks it, or the teleport spell that works in all the board(Except for squares next to mage/boss).

Card deal
The starting hand has at least three units. When a card is used, a random one from the deck is dealt.

The order of actions when multiple units can act.
0) Falling into water, swamp, hole
1) Healer (cure)
2) Spiders (trap enemies making them vulnerable to attacks)
3) Mage (ranged)
4) TNT Dwarf (attack unit and its adjacents)
5) Melee units: Soldier / Bat / Bomb Dwarf / Zombie
6) Ranged units: Archer / Hammer Dwarf / Boss Hammer Dwarf
7) Scorpions
8) Bee
9) Necromancers (raise resulting dead units)
10) Take heart?
Exception
The unit you move is the first! It can be a summon move or a slide move. The moved unit is the first to perform the action.

Healing Heart
When adjacent to a Healing Heart, you can pick it up, recovering 5 HP and curing Poison conditions. Only mage/boss can use this.
The heart appears when one of the mage/boss is with 5 or less of energy. Also when one of them is poisoned. Only one heart can be at the board.
The heart and all other objects disappear in any square other than the normal squares (water, quicksand, poisonous water, hole, etc.).
Maximum of 5 hearts in the match.

Sudden Death
If after ten moves, each player has only one remaining unit on the board and no cards on deck, one energy point will be drained for every next move!
In the latest version, it has been changed to the following:
A turn counter tracks how many turns have passed since one of the following actions occurred: A spell was cast (including unit summons), an enemy unit was attacked, or an enemy unit was destroyed by a deady square. If no such action happens for 10 turns, the game enters Sudden Death mode. From that point on, at the end of each turn, the player automatically fires shots that drain 1 energy from all enemy units. The counter resets every time one of the listed actions occurs.

Disabling status effects
Here's how to disable status effects.
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POISON : Dispel, Heal, Heart, Healer
Decreace Attack : Dispel, Increace Attack
Increace Attack : Dispel, Decreace Attack
Spider Web : Dispel, 5 turns(The adjacent friendly units hit to release the web. Each hit releases 1 of the 5.)