Magic The Gathering Cards of types 'Legendary' and 'Homunculus'

Whenever Borborygmos and Fblthp enters or attacks, draw a card, then you may discard any number of land cards. When you discard one or more cards this way, Borborygmos and Fblthp deals twice that much damage to target creature. {1}{U}: Put Borborygmos and Fblthp into its owner's library third from the top.

Partner with Okaun, Eye of Chaos (When this creature enters, target player may put Okaun into their hand from their library, then shuffle.) At the beginning of combat on your turn, flip a coin until you lose a flip. Whenever a player wins a coin flip, draw a card.

Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.) You have no maximum hand size. Max speed - If you would draw a card, draw two cards instead.

Whenever you win a coin flip, put a +1/+1 counter on Toothy and Zndrsplt. At the beginning of combat on your turn, flip a coin until you lose a flip. When Toothy and Zndrsplt leaves the battlefield, draw a card for each +1/+1 counter on Toothy and Zndrsplt.

Ward {2} You may look at the top card of your library any time. The top card of your library has plot. The plot cost is equal to its mana cost. You may plot nonland cards from the top of your library.

When Fblthp enters, draw a card. If it entered from your library or was cast from your library, draw two cards instead. When Fblthp becomes the target of a spell, shuffle Fblthp into its owner's library.

Players can't cast spells by paying alternative costs or without paying their mana costs. (Additional costs are still okay. Anything that replaces the mana cost like flashback or madness is not.)