You can check out Magics official decklists to see what more advanced players are using and perhaps use that as a jumping-off point
The Goal of Arena While the communication from Wizards sometimes becomes muddled thanks to its tendency to answer questions about Arena with phrases like "anything is possible" or "you never know," if you take what Wizards has said about Arena as a whole, the mission of the game is clear: to make Magic Arena the best digital Magic experience possible for new and intermediate players
Plan being here to side Ernies out and Dreams in for slower, creature light decks
Fortunately, when considering paying for X cards, even something as little as equals or is a really solid rate
The entire sequence looks like this: Cast a spell with Cascade, like Bloodbraid Elf
There are also plenty of things with +1/+1 counters on them in cube and so flipping this right away shouldn't be very difficult