Due to the nature of how Magic is played, capitalizing on a game mechanic thats bound to happen on every player's turn like drawing cards is always going to be a desirable effect, and can in some cases turn into too much of an advantage or unlock play patterns that dont sit well with the community
Or you could use cards like Merfolk Looter and pitch big, splashy spells into the graveyard you can flash back for cheap, like Ezuris Predation, Clone Legion, or Insurrection
It drains each opponent for each Shrine you have in play
Summon: IxionSummon: Ixion A 3/3 with first strike for three mana used to be a helluva deal but those days are long gone
This toolkit has over 100 energy cards, four booster packs, and accessories to get you started, including sleeves, damage counters, and coins