Once you do, the Giganotosaurs destroys all artifacts and creatures in play except for itself
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You could run a deck with Faiths Fetters style effects and sacrifice the enchantments that were locking down creatures in response to effects like pyroclasm, and get this critter on to the battlefield, cheap, and then suit it up with some fat aura that you binned earlier
Along with that, they also grant each instant and sorcery in your graveyard flashback, with the cost being equal to its mana cost
Everflowing Chalice costs 0 mana, with the option of adding the additional multikicker cost, so in this instance if you choose to pay for multikicker as part of the casting cost, you pay one less mana thanks to Foundry Inspector
(2024-02-02) Due to a recent rules change to suspend, you are no longer required to cast the suspended card as the second triggered ability of suspend resolves