You may choose to exile your hand even if you have no cards in hand
It gets +X/+0, where X is the number of other creatures you control with base power one
It is the cards themselves that hold the key, there are types of design and certain mechanisms that go a long way to minimising both mana floods and mana screws
A common pitfall for a new player is to overcompensate by adding or removing lands from a deck after every mana hosing or mana flood
Ashling, the Limitless Ashling, the Limitless benefits from the many elementals available to it
Notices 26.1 A notice, demand, consent or approval or communication under these Conditions ('Notice') must be: (a) in writing, in English, and signed by a person duly authorised by the sender