For two mana, you can turn an opponents Land into an Island and draw a card
Megabot is your most useful one as a way to banish damaged characters, but having to banish it as part of the cost puts you down an Item in an already Item-sparse deck.
Cards like Unruly Catapult, Galvanic Juggernaut, Traxos, Scourge of Kroog, Staff of Compleation, Bender's Waterskin, and the game changer, Mana Vault all have ways to untap themselves
This concept is too heavy on Evolutions that RS Urshifu can sweep it in 2 turns since iirc, none of them reaches 130 HP above and no Mew in the format (idk, if RS Urshifu is relevant atm, but still we have to consider this thing.) 3