Try to use Terra and other cards like Gogo: Mysterious Mine, which can become a copy of Terra to quickly get his cost down by adding creatures to the graveyard
This is so easy to do in MTG now - especially in red and just with Quintorius - that youll get a lot of use out of this card
Then theres that thing about being able to double the counters on all your creatures, and youve just entered a new power level
Honestly, I'm not even that great at the strategy
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Its perhaps not best-suited to newcomers since it requires keeping tabs on a lot of counters (often different types), but by spending some time planning, you can create Summon creatures and keep them on the board much longer than expected, while also powering up just about everything on your board