Then, if there is a Character with a cost of 0, this Leader gains +1000 power during this turn
Sieges have the intrinsic ability "When the last defense counter is removed from this permanent, exile it, then you may cast it transformed without paying its mana cost." If, using the ability of Nesting Grounds, you move the last defense counter from Invasion of Ikoria under your control to a Siege controlled by your opponent, then the intrinsic trigger of Invasion of Ikoria will activate, allowing you to cast Zilortha, Apex of Ikoria without paying its mana cost
Roc Egg is already in there, but you can add Rukh Egg and Dragon Egg
The price-to-quality ratio is often favorable, particularly for alternate full art versions that cost significantly more in the English-language market
Like most Magic: The Gathering cards, the value of Akiri, Line-Slinger depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Commander 2016)
In action, this deck works like a treat