You can splice multiple cards if they are in your hand and you have the mana
This entire list of options features games like Magic the Gathering , whether the similarities run through mechanics, collecting, or engines
Bristling Hydra: [Category 2] ETB yield is 3 Energy for 4 mana, then you can spend 3 Energy to place a +1/+1 on this creature and give it end of turn Hexproof
When this creature enters, creatures you control perpetually gain When this creature dies, you may shuffle it into its owners library if its in your graveyard
This is a good creature simply because of how flexible it can be
Ethereal Investigator As I mentioned in my Type Four conversations online about including this card in our Type Four stack where investigate cards can be paid immediately, "This is better the more players you have." I mean we run cards like Mulldrifter (which is also free if you evoke it), Cloudblazer, Sphinx of Uthuun, and Sphinx of Enlightenment for card flow from a dork, but if you are running around too many duels, then this is essentially a mana 2/3 flyer that replaces itself and makes 1/1 Spirits with flying on your 2nd card drawn each turn, so one with the Clue after you sac it