Seals are placed on Marks. They do special things. A seal can only be placed on its own Mark. These cause your mark to not produce Quanta. These cannot be targeted. If you have a mark card, you can play this on one of them. Basically, they are powered by and enhance Elemental Marks. Some are probably better or more situational than others. Ideally, with some changes, they will allow for new strategies.
Seal of Mind
Your weapon attacks do spell damage
Seal of Winds
Whenever a creature deals damage, gain 1 random quanta
Seal of Night
Whenever a creature attacks, gain 1 Health
Seal of Decay
Whenever death effects are triggered, gain 1 Health
Seal of Stones
Your weapons and Shields cannot be detroyed
Seal of Chaos
Whenever a spell is cast, cast a spell on a creature in play
Seal of Flames
Deal one damage to opponent every time you take damage
Seal of Weights
Whenever you are dealt damage, a creature you control gains +0|+1
Seal of Renewal
Whenever a creature comes into play, gain its casting cost in Health
Seal of Souls
Whenever you gain health, a creature you control gains +1|+0
Seal of Hours
Whenever you draw a card, gain 1 Health
Seal of Tides
Every other turn, your creatures gain +1|+0 or -1|-0
