Just about every spell in their deck triggers this and lets them recur another removal spell from the graveyard
At this point, it's hard to say whether the tokens from Unstable will have any value at all, but based on the past, it's worth keeping the usually forgotten card type in mind as Unstable spoilers roll out over the next few weeks
Previously, in cases where a card's mana value differed from the resulting spell, such as with some modal double-faced cards or cards with an Adventure, you could cast a spell with a higher mana value than the exiled card
Along similar lines to Idol of Endurance, Serpents Soul-Jar lets you recast your creatures
These Doctor Who Commander Decks are ready-to-play right out of the box with a 100-card deck, 10 Planechase cards to travel through time and space as you play, accessories, and a deck box to store it all in
Managorger Hydra Tied with Mossborn Hydra The number one slot had to be shared with the two Hydras with excellent abilities and super low casting costs