If your deck benefits from life gain but doesn't need it then any card in the cube with any life gain potential that you want in your deck has surprisingly higher value than you might think
On the Google Play Store, the game is still showing as coming soon
Shifting Rock Star out early means you can be even more aggressive, dropping low-cost characters and drawing new ones from the top of your deck every time you do

-Removed Artifacts-Behemoth SledgeBonehoardBrawler's PlateDarksteel PlateDecimator WebDragon BloodFireshriekerHorned HelmInquisitor's FlailViridian Longbow --Added Artifacts--Urza's FilterEnsnaring BridgeAshnod's AltarAbzan BannerWhispersilk CloakTrailblazer's Boots -Removed Enchantments-Soul LinkPhyresisNature's BlessingForced AdaptationGift of OrzhovaCadaverous BloomRancor -Removed Creatures-Consumptive GooCorrosive MentorGleancrawlerLost LeoninLotleth TrollScavenging OozeSluiceway ScorpionSmoldering ButcherUndergrowth ScavengerVebulidPhyrexian Debaser --Added Creatures--Spike CannibalGenesis HydraSpinebiterMazirek, Kraul Death PriestIvorytusk FortressTeneb, the HarvesterTine ShrikeVampire HexmageSelesnya GuildmageWinding Constrictor --Added Plainswalker--Ob Nixilis Reignited -Removed Sorceries-DuneblastDeath FrenzyDamnation --Added Sorcery--Increasing AmbitionCall to the GatewatchPhyrexian Rebirth -Removed Instants-Executioner's Swing --Added Instants--Ready / Willing nicochulo on Help me with my solo-blue 8 years ago If you aim to get cards out fast you need accelerators (obviously).The world of accelerators is vast, and it ranges from straight up direct mana accelerators like Azorius Signet or Abzan Banner to literal cost reducing ones like Cloud Key,and obviously the ones that directly put a card in play like Dramatic Entrance (even though that one's rubbish)

Shinryu has an auto ability that reads When Shinryu enters the field, you may search for 1 card and add it to your hand. Shinryu also has a Special ability Tidal Wave which costs 6 CP and reads, Break all the Forwards opponent controls