Players cannot use banned cards at all in the formats that ban them
Another great option are cards like Force of Will or Force of Negation that give you alternate ways to pay for their mana cost without using mana
EVENT HAZARDS: You assume all risks of personal injury related to the event, including those arising from loud music, special effects, or other hazards
Trading Card Game Meta If a card is playable and dominating the current TCG format, expect demand (and price) to rise
Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.) When this creature enters, search your library for a basic Plains card or a creature card with mana value 1 or less, reveal it, put it into your hand, then shuffle
It seems impossible to play the classic blue tempo deck in Modern these days, but a deck full of Hookblade Veteran and other cheap assassins in blue running Escape Detection, Flare of Denial and other cheap interaction cards seems tempting if probably futile