You have to buy cards the same way you would IRL, but theyre much cheaper

Eldrazi Ramp Sowing Mycospawn | Illustration by Slawomir Maniak Creature (16) Sowing Mycospawn x4 Devourer of Destiny x4 Drowner of Truth Nulldrifter x4 Sire of Seven Deaths x2 Emrakul, the Promised End Instant (8) Consign to Memory Kozilek's Command x4 Ugin's Binding x3 Sorcery (4) Enchantment (4) Artifact (4) Planeswalker (3) Land (21) Forest x6 Breeding Pool x4 Eldrazi Temple x4 Cavern of Souls Sanctum of Ugin Blast Zone Ugin's Labyrinth x4 Sideboard (15) Chalice of the Void x2 Tormod's Crypt A-Haywire Mite Consign to Memory x3 Pithing Needle Liquimetal Coating The Stone Brain Torpor Orb A-The One Ring God-Pharaoh's Statue Cityscape Leveler Portal to Phyrexia Simic forms the basis of Arenas Eldrazi ramp decks, which are fundamentally decks that rest on the combination of Eldrazi Temple and Ugin's Labyrinth to ramp out Sowing Mycospawn, then chain the ramp from that card into haymakers like Emrakul, the Promised End, Ugin, Eye of the Storms, or Sire of Seven Deaths

Its not bad , and it's at least better than +2/+2
Virtue of Knowledge There are plenty of activated abilities that you can copy with Virtue of Knowledge for a major impact
If you still need that hint, here you go
Working as an exceptional buff for dinosaur creatures, The Skullspore Nexus can help minimize your losses and double the power of your strongest creatures, enabling hugely impactful turns for relatively little investment