Instead you have a Masticore, which will eat up every card you draw
Arcane Signet Mana Artifact Color-fixing mana rock for any deck
You could pay less mana and play Seasons Past and probably still get a boatload of card advantage, but Seasons Past wont necessarily be able to target all of the things you want at the same time and it will never cost less than six mana
Witherbloom, the Balancer , is a $14 card right now that can trigger an infinite combo with Sprout Swarm
Lumen-Class Frigate A 2-mana Glorious Anthem is honestly a pretty fine Magic card, and Lumen-Class Frigate takes that further by eventually becoming a decent threat that breaks through a stalled board state
Its limited in its application as a weaker Dispel, but you can sacrifice Diversion Unit to protect your team from a wrath, or to protect a better card from removal