Not to be overly negative, but this card has a lot of hurdles to overcome. Whatever deck you brew will need to address these:

• 5 mana is excessively high for modern. Unless you have some way to mitigate or account for this massive cost, it’s never going to be playable.

• The card reads as being extremely underpowered. It’s 5 mana to draw a card on a Ward-2 body. That’s very, very weak. Unless you have some way to exploit its potentially high power, it’s doing nothing.

• carrying on from the point above, high power doesn’t equate to anything unless you can make it stick. Presumably you’re planning to Fling it?

• there are already lots if decks that excel at drawing their entire deck and winning on the spot with less pain. Notably, if you’re able to draw your whole deck, then you’re competing against Thassa's OracleGC, which will always just read as the better option

DemonDragonJ if your deck isn’t aiming to do some kind of combo that wins you the game immediately on your turn, i’m still not convinced this effect is worthwhile -particularly for 4 mana, which is super-high for a taxes effect. This cards effect is also particularly narrow/weak because it’s only active during your turn.

Something like Clarion Conqueror might be more fitting if you’re trying to slow down your opponents from doing particular things. But note that even though this card reads waaay-stronger than the two you’ve mentioned, it’s still super situational, and so not something you should be aiming to include in a deck unless you're deck is actively trying to tax other players out of the game

plakjekaas the way the card is worded, it does nothing to hinder shocklands like Sacred Foundry

The card reads as being extremely weak and narrow. I don’t see how this is a card players would consider in a deck at all

DemonDragonJ I would absolutely hate for Wotc to do that. Players are notoriously terrible at card design, usually being terrible with templating, colour-pie understanding, power-level, mana costs, rules interactions, and basically everything at every conceivable stage of the game.

Generally speaking, the people who would be most capable of designing a magic card are those same people that’ve seen the travesties the public have created, and know full-well the public should have no creative input in card design.

Even excusing player design capabilities, the sheer amount of resource and time it would take to allow for public submissions would be absurd. There’s nothing the company has to gain from the venture, and they’re guaranteed to lose money from trying it.