At any other time, you may have any number of cards in hand
Don't be afraid to jam hexproof, indestructible, and creatures that provide value just for entering the battlefield
Lands are like the Pokmon TCGs energy cards - except instead of attaching them to a unit, you place them on the field and tap them each turn, like a resource pool
It also has convoke, meaning the caster can tap creatures to take one colorless mana off of its casing cost
While List cards are typically a bit cheaper than their original counterparts, you can probably expect Sea of Clouds to retain its value
The fact that it exists will probably goad your opponents into attacking you, but the potential upside is well worth it