mtg sonic cards Magic the Gathering, Secret Lair: Secret Lair x the Hedgehog: Tu – Card Monster Games Haste Whenever Shadow the Hedgehog or another creature you control with flash or haste dies Sonic Screwdriver • Secret Lair

Sure, if you get to ten mana is one of the best cards to play...but that's a big nasty "if." Also note that this can be answered by normally played lands and mana rocks that don't require you to discard like Reliquary Tower, Thought Vessel and Decanter of Endless Water

At the very least, Id invest in a Gravecrawler, since it so easily comes back from the graveyard and can be sacrificed to Gisa over and over

You had my curiosity, but now you have my attention

Black Bearer of Silence : Its a cast trigger, so you cant benefit from recursion unless its something like Oversold Cemetery putting the card back in your hand

It's an enchantment